coo What are the advantages aluminum cooking utensil By feedproxy.google.com Published On :: Stainless steel tableware and kitchenware of rural hardware market is still in its infancy, mainly relying on the grocery store, hardware stores and other sales channels, products generally belong to the low-end, the brand is more... Full Article
coo China signs cooperation agreements with OECD and joins OECD Development Centre By www.oecd.org Published On :: Wed, 01 Jul 2015 11:00:00 GMT In a historic visit by Chinese Premier Li Keqiang to the OECD in Paris, the People’s Republic of China today decided to enhance longstanding collaboration with the OECD and to join the OECD Development Centre. Full Article
coo Iceland: Better coordination among authorities needed to tackle foreign bribery, says OECD By www.oecd.org Published On :: Tue, 11 Jan 2011 00:00:00 GMT Iceland must do more to ensure its law enforcement authorities are coordinated and adequately resourced to investigate and prosecute economic and financial crime, including foreign bribery, says the OECD in a new report. Full Article
coo Countries should focus on labour market policies to help refugees and improve coordinated actions to tackle illegal immigration By www.oecd.org Published On :: Wed, 20 Jun 2018 11:00:00 GMT Migration flows to OECD countries have dropped slightly for the first time since 2011, with around 5 million new permanent migrants in 2017, down from 5.3 million in 2016. This trend is mainly due to a significant decrease in new asylum applications, with 1.2 million applications in 2017 compared to 1.6 million in 2016, according to a new OECD report. Full Article
coo Is there a Need for Cooperation on National Climate Change Policies? By www.oecd.org Published On :: Tue, 03 Feb 2015 09:58:00 GMT Climate policy and competitiveness issues have created a new need for international co-ordination, beyond the scope of our current frameworks. There is no need to trade economic growth for environmental stringency. Environmentally stringent policies are an incentive for greater efficiencies which leading edge companies can easily achieve. Full Article
coo OECD’s Gurría reaffirms need for global cooperation amid progress at G20 Summit By www.oecd.org Published On :: Sat, 08 Jul 2017 19:33:00 GMT International cooperation is now more critical than ever, OECD Secretary-General Angel Gurría said following a G20 Leader’s Summit marked both by controversy but also advances on a range of policies to tackle global challenges. Full Article
coo Clean power for a cool planet: Electricity infrastructure plans and the Paris Agreement - Environment Working Paper By doi.org Published On :: Mon, 03 Dec 2018 09:49:00 GMT Meeting the temperature goals of the Paris Agreement requires a transformational change in our infrastructure systems. This working paper aims to shed light on the extent to which current electricity generation projects under construction at the global level - the "pipeline" - are consistent with what a low-carbon transition requires. Full Article
coo Is there a Need for Cooperation on National Climate Change Policies? By www.oecd.org Published On :: Tue, 03 Feb 2015 09:58:00 GMT Climate policy and competitiveness issues have created a new need for international co-ordination, beyond the scope of our current frameworks. There is no need to trade economic growth for environmental stringency. Environmentally stringent policies are an incentive for greater efficiencies which leading edge companies can easily achieve. Full Article
coo OECD, ILO call on G20 labour ministers to reinforce cooperation By www.oecd.org Published On :: Wed, 17 Jul 2013 09:00:00 GMT Joint statement by ILO Director-General Guy Ryder and OECD Secretary-General Angel Gurría on the occasion of the G20 Labour and Employment Ministers’ Meeting, Moscow, 18-19 July 2013 Full Article
coo OECD and Italian government step up cooperation on boosting jobs and local development - Renewal of the OECD LEED Trento Centre's mandate By www.oecd.org Published On :: Mon, 30 Nov 2015 12:26:00 GMT The OECD and the Italian government are stepping up cooperation to ensure effective implementation of local development strategies to boost jobs, encourage entrepreneurship and increase social inclusion. An agreement, to be signed in Rome on 1 December 2015, will renew the mandate of the OECD Trento Centre for Local Development and establish a satellite office in Venice. Full Article
coo Countries should focus on labour market policies to help refugees and improve coordinated actions to tackle illegal immigration By www.oecd.org Published On :: Wed, 20 Jun 2018 11:00:00 GMT Migration flows to OECD countries have dropped slightly for the first time since 2011, with around 5 million new permanent migrants in 2017, down from 5.3 million in 2016. This trend is mainly due to a significant decrease in new asylum applications, with 1.2 million applications in 2017 compared to 1.6 million in 2016, according to a new OECD report. Full Article
coo Iceland: Better coordination among authorities needed to tackle foreign bribery, says OECD By www.oecd.org Published On :: Tue, 11 Jan 2011 00:00:00 GMT Iceland must do more to ensure its law enforcement authorities are coordinated and adequately resourced to investigate and prosecute economic and financial crime, including foreign bribery, says the OECD in a new report. Full Article
coo OECD and China expand cooperation in PISA education programme By www.oecd.org Published On :: Mon, 25 Aug 2014 10:10:00 GMT The OECD and China have announced that they will expand their cooperation in PISA, following the successful implementation of PISA 2009 and 2012 in Shanghai. Full Article
coo OECD and Italian government step up cooperation on boosting jobs and local development - Renewal of the OECD LEED Trento Centre's mandate By www.oecd.org Published On :: Mon, 30 Nov 2015 12:26:00 GMT The OECD and the Italian government are stepping up cooperation to ensure effective implementation of local development strategies to boost jobs, encourage entrepreneurship and increase social inclusion. An agreement, to be signed in Rome on 1 December 2015, will renew the mandate of the OECD Trento Centre for Local Development and establish a satellite office in Venice. Full Article
coo Zoa Morani Donates Blood For Covid-19 Plasmatherapy, Says "It Felt Super Cool" - News18 By news.google.com Published On :: Sun, 10 May 2020 03:40:25 GMT Zoa Morani Donates Blood For Covid-19 Plasmatherapy, Says "It Felt Super Cool" News18Zoa Morani donates blood for Covid-19 plasmatherapy: ‘They even gave me a certificate and Rs 500. Wont... Hindustan TimesCOVID-19 survivor Zoa Morani donates blood for plasma therapy Jimmys PostKarim Moranis daughter Zoa donates blood for plasma therapy trials Geo NewsZoa Morani urges all Covid-19 recovered people to donate blood for plasma therapy trials The News InternationalView Full coverage on Google News Full Article
coo MPs launch inquiry into e-scooter safety ahead of trials amid road chaos fears By www.dailymail.co.uk Published On :: Tue, 21 Apr 2020 10:48:51 GMT The Department for Transport (DfT) last month revealed the electric scooters, capable of 30mph, will be trialled in select cities as part of plans for a 'transport revolution'. Full Article
coo Karlie Kloss eats a cookie on the floor in her wedding dress By www.dailymail.co.uk Published On :: Sat, 09 May 2020 18:21:31 GMT The model, 27, posted several throwbacks on Friday, including one of her eating a cookie on the floor on her wedding day to Joshua Kushner. Full Article
coo Granit Xhaka says he'd not felt such 'hatred' as he lost cool and told Arsenal fans to 'f*** off' By Published On :: Wed, 29 Apr 2020 12:37:05 +0100 The midfielder's career at the Emirates looked to be over after he was stripped of the captaincy following his altercation with fans in the 2-2 draw with Crystal Palace. Full Article
coo How coolies of Hatia responded to our call for help By timesofindia.indiatimes.com Published On :: Sun, 10 May 2020 05:00:00 IST Full Article
coo Apple CEO Tim Cook on India, Steve Jobs, missteps and more By timesofindia.indiatimes.com Published On :: Wed, 14 Sep 2016 17:09:22 IST Apple CEO Tim Cook is a man of few words. In an interview to Washington Post, the usually reticent CEO of one of the world's most valuable company talked about a number of things including the 'enormous India opportunity', Steve Jobs, mistakes made during his tenure so far and much more. Full Article
coo Redditors Did a Lockdown Cooking Contest and Here Are the Best Recipes By www.news18.com Published On :: Sun, 10 May 2020 10:48:42 +0530 The best three photos will be decided on the basis of the votes on the posts. Full Article
coo Zoa Morani Donates Blood For Covid-19 Plasmatherapy, Says "It Felt Super Cool" By www.news18.com Published On :: Sun, 10 May 2020 09:01:40 +0530 Actress Zoa Morani, who along with sister Shaza and father, film producer Karim Morani recovered from Covid-19 in April donated her blood for plasmatherapy. Full Article
coo Director Kamal Rubbishes Sexual Harassment Allegations Against Him, Calls It A Cooked Up Story By www.filmibeat.com Published On :: Mon, 27 Apr 2020 18:31:46 +0530 Of lately, Kerala was shocked after the news of the ace filmmaker and Kerala State Chalchithra Academy Chairman Kamal being accused of sexual harassment surfaced. The serious allegations were made by a young actress of Mollywood, who complained that he had Full Article
coo Nivin Pauly, Aju Varghese, & Dhyan Sreenivasan Team Up Again: What's Cooking? By www.filmibeat.com Published On :: Thu, 07 May 2020 05:54:24 +0530 Nivin Pauly, Aju Varghese, and Dhyan Sreenivasan, the popular actors last joined hands for Love Action Drama, the superhit romantic comedy. Interestingly, the trio is now joining hands once again, to the much-excitement of the audiences. Aju Varghese revealed the exciting Full Article
coo Mahabharat: After Cooler, Netizens Spot A Dead Man Coming Back To Life In A Scene! By www.filmibeat.com Published On :: Sat, 09 May 2020 13:39:32 +0530 Post the lockdown, Doordarshan re-aired mythological shows Ramayan and Mahabharat on popular demand. Ever since then, the shows are making a lot of noise. The viewers have been following the shows very closely. Recently, netizens spotted a cooler behind Bhishma Pitamah Full Article
coo Mother's Day 2020: From Mira Rajput To Kareena Kapoor, Meet B-Towns' Coolest Moms By www.filmibeat.com Published On :: Sun, 10 May 2020 05:40:03 +0530 Being a mother is more than a full-time job and some of the B-town celebrities are doing it all while winning the world with their work and charm. From being the centre of attention on social media to paparazzi following them, Full Article
coo Mother's Day 2020: From Mira Rajput To Kareena Kapoor, Meet B-Towns' Coolest Moms By www.filmibeat.com Published On :: Sun, 10 May 2020 05:40:03 +0530 Being a mother is more than a full-time job and some of the B-town celebrities are doing it all while winning the world with their work and charm. From being the centre of attention on social media to paparazzi following them, Full Article
coo Hero MotoCorp To Enter EV Segment: Electric Maestro Scooter Spotted Ahead Of Launch By www.drivespark.com Published On :: Wed, 06 May 2020 08:45:09 +0530 The Hero Maestro Electric Proto concept electric scooter has been spotted ahead of its India launch. The eMaestro electric scooter will be the brand's first product offering to the EV segment in India. Full Article
coo Vespa BS6 Scooter Range Launched in India: Prices Start At Rs 93,035 By www.drivespark.com Published On :: Wed, 06 May 2020 12:24:13 +0530 Vespa BS6 scooters have been launched in the Indian market. The BS6 scooters are now available at a starting price of Rs 93,035 ex-showroom (Delhi). Full Article
coo Top Bike News Of The Week: Vespa BS6 Scooters Launch, Bajaj Discover & V BS6, eMaestro & More By www.drivespark.com Published On :: Sat, 09 May 2020 20:15:29 +0530 Top two-wheeler news for this week includes a bunch of new Italian scooters introduced in the Indian market, while a major auto manufacturer plans to enter the electric two-wheeler segment in the country. Also, Bajaj and Royal Enfield have announced their future plans. Here are all the details: Full Article
coo Giants renegotiate Cooper Rush’s deal By sports.yahoo.com Published On :: Sun, 10 May 2020 01:29:12 GMT The Giants claimed Cooper Rush off waivers from their division rivals earlier this week. It makes sense given Rush's familiarity with new offensive coordinator Jason Garrett's offense. Rush can help teach it to starter Daniel Jones. Of course, the Giants don't expect Rush to play. Thus, they renegotiated Rush's deal, which was due to pay [more] Full Article article Sports
coo Will cooperate with steps taken by PM, CM in this hour of shared challenge: SAD By www.newkerala.com Published On :: Mon, 23 Mar 2020 11:09:02 +0530 Full Article
coo Punjab CM forms 13-member control room to coordinate wheat harvesting By www.newkerala.com Published On :: Wed, 08 Apr 2020 02:52:01 +0530 Full Article
coo Chandigarh Police's trapper for uncooperative corona patients By www.newkerala.com Published On :: Sun, 26 Apr 2020 16:05:01 +0530 Full Article
coo Panchkula: Cook at police dept tests positive By indianexpress.com Published On :: Sat, 09 May 2020 20:41:45 +0000 Full Article Chandigarh Cities
coo Poly[(μ4-5,7-dihydro-1H,3H-dithieno[3,4-b:3',4'-e]pyrazine-κ4N:N':S:S')tetra-μ3-iodido-tetracopper]: a three-dimensional copper(I) coordination polymer By scripts.iucr.org Published On :: 2020-03-27 The reaction of ligand 5,7-dihydro-1H,3H-dithieno[3,4-b:3',4'-e]pyrazine (L) with CuI lead to the formation of a three-dimensional coordination polymer, incorporating the well known [CuxIx]n staircase motif (x = 4). These polymer [Cu4I4]n chains are linked via the N and S atoms of the ligand to form the three-dimensional coordination polymer poly[(μ4-5,7-dihydro-1H,3H-dithieno[3,4-b:3',4'-e]pyrazine-κ4N:N':S:S')tetra-μ3-iodido-tetracopper], [Cu4I4(C8H8N2S2)]n (I). The asymmetric unit is composed of half a ligand molecule, with the pyrazine ring located about a center of symmetry, and two independent copper(I) atoms and two independent I− ions forming the staircase motif via centers of inversion symmetry. The framework is consolidated by C—H⋯I hydrogen bonds. Full Article text
coo Poly[[μ4-3,4,8,10,11,13-hexahydro-1H,6H-bis([1,4]dithiocino)[6,7-b:6',7'-e]pyrazine]di-μ-iodido-dicopper(I)]: a two-dimensional copper(I) coordination polymer By scripts.iucr.org Published On :: 2020-04-07 The reaction of ligand 3,4,8,10,11,13-hexahydro-1H,6H-bis([1,4]dithiocino)[6,7-b:6',7'-e]pyrazine (L) with CuI led to the formation of a two-dimensional coordination polymer, incorporating a [Cu2I2] motif. These units are linked via the four S atoms of the ligand to form the title two-dimensional coordination polymer, poly[[μ4-3,4,8,10,11,13-hexahydro-1H,6H-bis([1,4]dithiocino)[6,7-b:6',7'-e]pyrazine]di-μ-iodido-dicopper(I)], [Cu2I2(C12H16N2S4)]n, (I). The asymmetric unit is composed of a ligand molecule, two copper(I) atoms and two I− ions. Both copper(I) atoms are fourfold S2I2 coordinate with almost regular trigonal-pyramidal environments. In the crystal, the layers, lying parallel to (102), are linked by C—H⋯I hydrogen bonds, forming a supramolecular framework. Full Article text
coo A molybdenum tris(dithiolene) complex coordinates to three bound cobalt centers in three different ways By scripts.iucr.org Published On :: 2019-07-26 The synthesis and structural characterization of the molecular compound (μ3-benzene-1,2-dithiolato)hexacarbonylbis(μ3-1,1,1,4,4,4-hexafluorobut-2-ene-2,3-dithiolato)tricobaltmolybdenum, [Co3Mo(C4F6S2)2(C6H4S2)(CO)6] or Mo(tfd)2(bdt)(Co(CO)2)3 (tfd is 1,1,1,4,4,4-hexafluorobut-2-ene-2,3-dithiolate and bdt is benzene-1,2-dithiolate), are reported. The structure of the molecule contains the molybdenum tris(dithiolene) complex Mo(tfd)2(bdt) coordinated as a multidentate ligand to three cobalt dicarbonyl units. Each of the three cobalt centers is relatively close to molybdenum, with Co⋯Mo distances of 2.7224 (7), 2.8058 (7), and 2.6320 (6) Å. Additionally, each of the cobalt centers is bound via main-group donor atoms, but each one in a different way: the first cobalt atom is coordinated by two sulfur atoms from different dithiolenes (bdt and tfd). The second cobalt atom is coordinated by one sulfur from one tfd and two olefinic carbons from another tfd. The third cobalt is coordinated by one sulfur from bdt and two sulfurs from tfd. This is, to the best of our knowledge, the first structurally characterized example of a molybdenum (tris)dithiolene complex that coordinates to cobalt. The F atoms of two of the –CF3 groups were refined as disordered over two sets of sites with ratios of refined occupancies of 0.703 (7):0.297 (7) and 0.72 (2):0.28 (2). Full Article text
coo Palladium(II) complexes of a bridging amine bis(phenolate) ligand featuring κ2 and κ3 coordination modes By scripts.iucr.org Published On :: 2019-07-26 Bidentate and tridentate coordination of a 2,4-di-tert-butyl-substituted bridging amine bis(phenolate) ligand to a palladium(II) center are observed within the same crystal structure, namely dichlorido({6,6'-[(ethane-1,2-diylbis(methylazanediyl)]bis(methylene)}bis(2,4-di-tert-butylphenol))palladium(II) chlorido(2,4-di-tert-butyl-6-{[(2-{[(3,5-di-tert-butyl-2-hydroxyphenyl)methyl](methyl)amino}ethyl)(methyl)amino]methyl}phenolato)palladium(II) methanol 1.685-solvate 0.315-hydrate, [PdCl2(C34H56N2O2)][PdCl(C34H55N2O2)]·1.685CH3OH·0.315H2O. Both complexes exhibit a square-planar geometry, with unbound phenol moieties participating in intermolecular hydrogen bonding with co-crystallized water and methanol. The presence of both κ2 and κ3 coordination modes arising from the same solution suggest a dynamic process in which phenol donors may coordinate or dissociate from the metal center, and offers insight into catalyst speciation throughout Pd-mediated processes. The unit cell contains dichlorido({6,6'-[(ethane-1,2-diylbis(methylazanediyl)]bis(methylene)}bis(2,4-di-tert-butylphenol))palladium(II), {(L2)PdCl2}, and chlorido(2,4-di-tert-butyl-6-{[(2-{[(3,5-di-tert-butyl-2-hydroxyphenyl)methyl](methyl)amino}ethyl)(methyl)amino]methyl}phenolato)palladium(II), {(L2X)PdCl}, molecules as well as fractional water and methanol solvent molecules. Full Article text
coo Crystal structures of four dimeric manganese(II) bromide coordination complexes with various derivatives of pyridine N-oxide By scripts.iucr.org Published On :: 2019-07-30 Four manganese(II) bromide coordination complexes have been prepared with four pyridine N-oxides, viz. pyridine N-oxide (PNO), 2-methylpyridine N-oxide (2MePNO), 3-methylpyridine N-oxide (3MePNO), and 4-methylpyridine N-oxide (4MePNO). The compounds are bis(μ-pyridine N-oxide)bis[aquadibromido(pyridine N-oxide)manganese(II)], [Mn2Br4(C5H5NO)4(H2O)2] (I), bis(μ-2-methylpyridine N-oxide)bis[diaquadibromidomanganese(II)]–2-methylpyridine N-oxide (1/2), [Mn2Br4(C6H7NO)2(H2O)4]·2C6H7NO (II), bis(μ-3-methylpyridine N-oxide)bis[aquadibromido(3-methylpyridine N-oxide)manganese(II)], [Mn2Br4(C6H7NO)4(H2O)2] (III), and bis(μ-4-methylpyridine N-oxide)bis[dibromidomethanol(4-methylpyridine N-oxide)manganese(II)], [Mn2Br4(C6H7NO)4(CH3OH)2] (IV). All the compounds have one unique MnII atom and form a dimeric complex that contains two MnII atoms related by a crystallographic inversion center. Pseudo-octahedral six-coordinate manganese(II) centers are found in all four compounds. All four compounds form dimers of Mn atoms bridged by the oxygen atom of the PNO ligand. Compounds I, II and III exhibit a bound water of solvation, whereas compound IV contains a bound methanol molecule of solvation. Compounds I, III and IV exhibit the same arrangement of molecules around each manganese atom, ligated by two bromide ions, oxygen atoms of two PNO ligands and one solvent molecule, whereas in compound II each manganese atom is ligated by two bromide ions, one O atom of a PNO ligand and two water molecules with a second PNO molecule interacting with the complex via hydrogen bonding through the bound water molecules. All of the compounds form extended hydrogen-bonding networks, and compounds I, II, and IV exhibit offset π-stacking between PNO ligands of neighboring dimers. Full Article text
coo One-dimensional ladder gallium coordination polymer By scripts.iucr.org Published On :: 2019-10-03 A one-dimensional ladder-type coordination polymer, poly[[(μ2-hydroxido)(μ2-1H-pyrazole-3,5-dicarboxylato)gallium(III)] monohydrate], [Ga(C5H2N2O4)(OH)(H2O)]n or [Ga(HPDC)(OH)(H2O)]n, I, isotypic with a V3+ coordination polymer previously reported by Chen et al. [J. Coord. Chem. (2008). 61, 3556–3567] was prepared from Ga3+ and pyrazole-3,5-dicarboxylic acid monohydrate (H3PDC·H2O). Compound I was isolated using three distinct experimental methods: hydrothermal (HT), microwave-assisted (MWAS) and one-pot (OP) and the crystallite size should be fine-tuned according to the method employed. The coordination polymeric structure is based on a dimeric Ga3+ moiety comprising two μ2-bridging hydroxide groups, which are interconnected by HPDC2− anionic organic linkers. The close packing of individual polymers is strongly directed by the supramolecular interactions, namely several O—H⋯O and N—H⋯O hydrogen-bonding interactions. Full Article text
coo Crystal structure of a two-dimensional coordination polymer of formula [Zn(NDC)(DEF)] (H2NDC is naphthalene-2,6-dicarboxylic acid and DEF is N,N-diethylformamide) By scripts.iucr.org Published On :: 2019-10-29 A zinc metal–organic framework, namely poly[bis(N,N-diethylformamide)(μ4-naphthalene-2,6-dicarboxylato)(μ2-naphthalene-2,6-dicarboxylato)dizinc(II)], [Zn(C12H6O4)(C15H11NO)]n, built from windmill-type secondary building units and forming zigzag shaped two-dimensional stacked layers, has been solvothermally synthesized from naphthalene-2,6-dicarboxylic acid and zinc(II) acetate as the metal source in N,N-diethylformamide containing small amounts of formic acid. Full Article text
coo Crystal structures of two coordination isomers of copper(II) 4-sulfobenzoic acid hexahydrate and two mixed silver/potassium 4-sulfobenzoic acid salts By scripts.iucr.org Published On :: 2019-10-31 A reaction of copper(II) carbonate and potassium 4-sulfobenzoic acid in water acidified with hydrochloric acid yielded two crystalline products. Tetraaquabis(4-carboxybenzenesulfonato)copper(II) dihydrate, [Cu(O3SC6H4CO2H)2(H2O)4]·2H2O, (I), crystallizes in the triclinic space group Poverline{1} with the Cu2+ ions located on centers of inversion. Each copper ion is coordinated to four water molecules in a square plane with two sulfonate O atoms in the apical positions of a Jahn–Teller-distorted octahedron. The carboxylate group is protonated and not involved in coordination to the metal ions. The complexes pack so as to create a layered structure with alternating inorganic and organic domains. The packing is reinforced by several O—H⋯O hydrogen bonds involving coordinated and non-coordinated water molecules, the carboxylic acid group and the sulfonate group. Hexaaquacopper(II) 4-carboxybenzenesulfonate, [Cu(H2O)6](O3SC6H4CO2H)2, (II), also crystallizes in the triclinic space group Poverline{1} with Jahn–Teller-distorted octahedral copper(II) aqua complexes on the centers of inversion. As in (I), the carboxylate group on the anion is protonated and the structure consists of alternating layers of inorganic cations and organic anions linked by O—H⋯O hydrogen bonds. A reaction of silver nitrate and potassium 4-sulfobenzoic acid in water also resulted in two distinct products that have been structurally characterized. An anhydrous silver potassium 4-carboxybenzenesulfonate salt, [Ag0.69K0.31](O3SC6H4CO2H), (III), crystallizes in the monoclinic space group C2/c. There are two independent metal sites, one fully occupied by silver ions and the other showing a 62% K+/38% Ag+ (fixed) ratio, refined in two slightly different positions. The coordination environments of the metal ions are composed primarily of sulfonate O atoms, with some participation by the non-protonated carboxylate O atoms in the disordered site. As in the copper compounds, the cations and anions cleanly segregate into alternating layers. A hydrated mixed silver potassium 4-carboxybenzenesulfonate salt dihydrate, [Ag0.20K0.80](O3SC6H4CO2H)·2H2O, (IV), crystallizes in the monoclinic space group P21/c with the Ag+ and K+ ions sharing one unique metal site coordinated by two water molecules and six sulfonate O atoms. The packing in (IV) follows the dominant motif of alternating inorganic and organic layers. The protonated carboxylate groups do not interact with the cations directly, but do participate in hydrogen bonds with the coordinated water molecules. (IV) is isostructural with pure potassium 4-sulfobenzoic acid dihydrate. Full Article text
coo Crystal structure and Hirshfeld surface analysis of poly[tris(μ4-benzene-1,4-dicarboxylato)tetrakis(dimethylformamide)trinickel(II)]: a two-dimensional coordination network By scripts.iucr.org Published On :: 2019-11-08 The crystal structure of the title compound, [Ni3(C8H4O4)3(C3H7NO)4], is a two-dimensional coordination network formed by trinuclear linear Ni3(tp)3(DMF)4 units (tp = terephthalate = benzene-1,4-dicarboxylate and DMF = dimethylformamide) displaying a characteristic coordination mode of acetate groups in polynuclear metal–organic compounds. Individual trinuclear units are connected through tp anions in a triangular network that forms layers. One of the DMF ligands points outwards and provides interactions with equivalent planes above and below, leaving the second ligand in a structural void much larger than the DMF molecule, which shows positional disorder. Parallel planes are connected mainly through weak C—H⋯O, H⋯H and H⋯C interactions between DMF molecules, as shown by Hirshfeld surface analysis. Full Article text
coo Crystal structure of the coordination polymer catena-poly[[[(acetonitrile-κN)copper(I)]-μ3-1,3-dithiolane-κ3S:S:S'] hexafluoridophosphate] By scripts.iucr.org Published On :: 2020-01-01 The polymeric title compound, [Cu2(C2H3N)2(C3H6S2)2](PF6)2, represents an example of a one-dimensional coordination polymer resulting from the reaction of [Cu(MeCN)4][PF6] with 1,3-dithiolane. The cationic one-dimensional ribbon consists of two copper(I) centers each ligated by one acetonitrile molecule and interconnected through two bridging 1,3-dithiolane ligands. One S-donor site of each ligand is κ1-bound to Cu, whereas the second S atom acts as a four-electron donor, bridging two Cu atoms in a κ4-bonding mode. The positive charge of each copper cation is compensated for by a hexafluoridophosphate counter-ion. In the crystal, the polymer chains are linked by a series of C—H⋯F hydrogen bonds, forming a supramolecular framework. The crystal studied was refined as a two-component twin. Full Article text
coo Crystal structure and Hirshfeld surface analysis of a copper(II) complex with ethylenediamine and non-coordinated benzoate By scripts.iucr.org Published On :: 2020-01-01 In the title compound, diaquabis(ethylenediamine-κ2N,N')copper(II) bis(2-nitrobenzoate), [Cu(C2H8N2)2(H2O)2](C7H4NO4)2, two diaquabis(ethylenediamine)copper(II) cations and four nitrobenzoate anions are present in the asymmetric unit. All four anions are `whole-molecule' disordered over two sets of sites. The major components have refined occupancies of 0.572 (13), 0.591 (9), 0.601 (9) and 0.794 (10). The CuII ions exhibit slightly distorted octahedral geometries. In the crystal, cations and anions are connected to each other via N—H⋯O and O—H⋯O hydrogen bonds, forming a two-dimensional network parallel to (200). The intermolecular contacts in the crystal were further analysed using Hirshfeld surface analysis, which indicates that the most significant contacts are O⋯H/H⋯O (42.9%), followed by H⋯H (35.7%), C⋯H/H⋯C (14.2%), C⋯C (2.9%), C⋯O/O⋯C (2.2%), N⋯H/H⋯N (0.9%) and N⋯O/O⋯N (0.3%). Full Article text
coo The first coordination compound of deprotonated 2-bromonicotinic acid: crystal structure of a dinuclear paddle-wheel copper(II) complex By scripts.iucr.org Published On :: 2020-01-17 A copper(II) dimer with the deprotonated anion of 2-bromonicotinic acid (2-BrnicH), namely, tetrakis(μ-2-bromonicotinato-κ2O:O')bis[aquacopper(II)](Cu—Cu), [Cu2(H2O)2(C6H3BrNO2)4] or [Cu2(H2O)2(2-Brnic)4], (1), was prepared by the reaction of copper(II) chloride dihydrate and 2-bromonicotinic acid in water. The copper(II) ion in 1 has a distorted square-pyramidal coordination environment, achieved by four carboxylate O atoms in the basal plane and the water molecule in the apical position. The pair of symmetry-related copper(II) ions are connected into a centrosymmetric paddle-wheel dinuclear cluster [Cu⋯Cu = 2.6470 (11) Å] via four O,O'-bridging 2-bromonicotinate ligands in the syn-syn coordination mode. In the extended structure of 1, the cluster molecules are assembled into an infinite two-dimensional hydrogen-bonded network lying parallel to the (001) plane via strong O—H⋯O and O—H⋯N hydrogen bonds, leading to the formation of various hydrogen-bond ring motifs: dimeric R22(8) and R22(16) loops and a tetrameric R44(16) loop. The Hirshfeld surface analysis was also performed in order to better illustrate the nature and abundance of the intermolecular contacts in the structure of 1. Full Article text
coo Syntheses and crystal structures of the one-dimensional coordination polymers formed by [Ni(cyclam)]2+ cations and 1,3-bis(3-carboxypropyl)tetramethyldisiloxane anions in different degrees of deprotonation By scripts.iucr.org Published On :: 2020-02-25 The asymmetric units of the title compounds, namely, catena-poly[[(1,4,8,11-tetraazacyclotetradecane-κ4N1,N4,N8,N11)nickel(II)]-μ-1,3-bis(3-carboxylatopropyl)tetramethyldisiloxane-κ2O:O'], [Ni(C10H24O5Si2)(C12H24N4)]n (I), and catena-poly[[[(1,4,8,11-tetraazacyclotetradecane-κ4N1,N4,N8,N11)nickel(II)]-μ-4-({[(3-carboxypropyl)dimethylsilyl]oxy}dimethylsilyl)butanoato-κ2O:O'] perchlorate], {[Ni(C10H25O5Si2)(C12H24N4)]ClO4}n (II), consist of one (in I) or two crystallographically non-equivalent (in II) centrosymmetric macrocyclic cations and one centrosymmetric dianion (in I) or two centrosymmetric monoanions (in II). In each compound, the metal ion is coordinated by the four secondary N atoms of the macrocyclic ligand, which adopts the most energetically stable trans-III conformation, and the mutually trans O atoms of the carboxylate in a slightly tetragonally distorted trans-NiN4O2 octahedral coordination geometry. The crystals of both types of compounds are composed of parallel polymeric chains of the macrocyclic cations linked by the anions of the acid running along the [101] and [110] directions in I and II, respectively. In I, each polymeric chain is linked to four neighbouring ones by hydrogen bonding between the NH groups of the macrocycle and the carboxylate O atoms, thus forming a three-dimensional supramolecular network. In II, each polymeric chain contacts with only two neighbours, forming hydrogen bonds between the partially protonated carboxylic groups of the bridging ligand. As a result, a lamellar structure is formed with the layers oriented parallel to the (1overline{1}1) plane. Full Article text
coo The first coordination compound of 6-fluoronicotinate: the crystal structure of a one-dimensional nickel(II) coordination polymer containing the mixed ligands 6-fluoronicotinate and 4,4'-bipyridine By scripts.iucr.org Published On :: 2020-03-10 A one-dimensional nickel(II) coordination polymer with the mixed ligands 6-fluoronicotinate (6-Fnic) and 4,4'-bipyridine (4,4'-bpy), namely, catena-poly[[diaquabis(6-fluoropyridine-3-carboxylato-κO)nickel(II)]-μ-4,4'-bipyridine-κ2N:N'] trihydrate], {[Ni(6-Fnic)2(4,4'-bpy)(H2O)2]·3H2O}n, (1), was prepared by the reaction of nickel(II) sulfate heptahydrate, 6-fluoronicotinic acid (C6H4FNO2) and 4,4'-bipyridine (C10H8N2) in a mixture of water and ethanol. The nickel(II) ion in 1 is octahedrally coordinated by the O atoms of two water molecules, two O atoms from O-monodentate 6-fluoronicotinate ligands and two N atoms from bridging 4,4'-bipyridine ligands, forming a trans isomer. The bridging 4,4'-bipyridine ligands connect symmetry-related nickel(II) ions into infinite one-dimensional polymeric chains running in the [1overline{1}0] direction. In the extended structure of 1, the polymeric chains and lattice water molecules are connected into a three-dimensional hydrogen-bonded network via strong O—H⋯O and O—H⋯N hydrogen bonds, leading to the formation of distinct hydrogen-bond ring motifs: octameric R88(24) and hexameric R86(16) loops. Full Article text
coo Silver(I) nitrate two-dimensional coordination polymers of two new pyrazinethiophane ligands: 5,7-dihydro-1H,3H-dithieno[3,4-b:3',4'-e]pyrazine and 3,4,8,10,11,13-hexahydro-1H,6H-bis([1,4]dithiocino)[6,7-b:6',7'-e By scripts.iucr.org Published On :: 2020-03-13 The two new pyrazineophanes, 5,7-dihydro-1H,3H-dithieno[3,4-b:3',4'-e]pyrazine, C8H8N2S2, L1, and 3,4,8,10,11,13-hexahydro-1H,6H-bis([1,4]dithiocino)[6,7-b:6',7'-e]pyrazine, C12H16N2S4, L2, both crystallize with half a molecule in the asymmetric unit; the whole molecules are generated by inversion symmetry. The molecule of L1, which is planar (r.m.s. deviation = 0.008 Å), consists of two sulfur atoms linked by a rigid tetra-2,3,5,6-methylenepyrazine unit, forming planar five-membered rings. The molecule of L2 is step-shaped and consists of two S–CH2–CH2–S chains linked by the central rigid tetra-2,3,5,6-methylenepyrazine unit, forming eight-membered rings that have twist-boat-chair configurations. In the crystals of both compounds, there are no significant intermolecular interactions present. The reaction of L1 with silver nitrate leads to the formation of a two-dimensional coordination polymer, poly[(μ-5,7-dihydro-1H,3H-dithieno[3,4-b;3',4'-e]pyrazine-κ2S:S')(μ-nitrato-κ2O:O')silver(I)], [Ag(NO3)(C8H8N2S2)]n, (I), with the nitrato anion bridging two equivalent silver atoms. The central pyrazine ring is situated about an inversion center and the silver atom lies on a twofold rotation axis that bisects the nitrato anion. The silver atom has a fourfold AgO2S2 coordination sphere with a distorted shape. The reaction of L2 with silver nitrate also leads to the formation of a two-dimensional coordination polymer, poly[[μ33,4,8,10,11,13-hexahydro-1H,6H-bis([1,4]dithiocino)[6,7-b;6',7'-e]pyrazine-κ3S:S':S''](nitrato-κO)silver(I)], [Ag(NO3)(C12H16N2S4)]n, (II), with the nitrate anion coordinating in a monodentate manner to the silver atom. The silver atom has a fourfold AgOS3 coordination sphere with a distorted shape. In the crystals of both complexes, the networks are linked by C—H⋯O hydrogen bonds, forming supramolecular frameworks. There are additional C—H⋯S contacts present in the supramolecular framework of II. Full Article text