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First Vande Bharat Mission flight lands in Mumbai, concerns over state’s handling of Covid social distancing norms




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Cochin Port receives first lot of 698 expatriates

The first batch of 698 expatriates evacuated from the Maldives arrived at Cochin Port on Sunday morning. INS Jalaswa of Indian Navy, which brought these passengers was the first ship to reach India with passengers under Operation Samudra Setu. Majority of passengers are from Kerala and Tamil Nadu there are repatriates of 18 other states and UTs also in the ship.




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First Air India repatriation flight to take off from San Francisco, only asymptomatic passengers allowed onboard

Only those Indian nationals who show no signs of contracting the coronavirus infection and have been stranded in the US due to the lockdown are allowed to board the first repatriation flight of Air India from San Francisco to Mumbai and Hyderabad on Saturday. Over 10,000 registrations were recieved. People travelling under compelling circumstances were prioritised.




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First flights to bring back Indians land in Kerala

Launching its biggest ever repatriation exercise, India on Thursday airlifted 363 of its citizens, including nine infants, stranded in the United Arab Emirates due to the international travel lockdown over the COVID-19 pandemic.




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IPL: Former CSK opener Matthew Hayden reveals MS Dhoni's epic first re...

IPL: Former CSK opener Matthew Hayden reveals MS Dhoni's epic first re...




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First evacuation flight from Kuwait lands in Kochi




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This Mother's Day frontline workers fight it out, say nation comes first




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RIL's first rights issue in 3 decades likely to open on May 22




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Microsoft providing free repairs for Surface Laptop 3 screen cracks




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RE auction gets historic first tariff of Rs 2.90/kWh




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First Covid-19 patient to receive plasma therapy in UP dies of heart attack

The doctor, who was on ventilator since the last 14 days, died on Saturday evening following a heart attack, KGMU Vice Chancellor M L B Bhatt said




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Covid-19: First evacuation flight with 326 Indians lands in Mumbai from UK

On Monday, India announced had that it will begin phased repatriation of its citizens stranded abroad from May 7




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Vande Bharat: First flight lands in Hyderabad




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First train with migrants leaves for Jharkhand from Mangaluru

A train with 1,140 migrant workers left Mangaluru Junction for Jharkhand on Saturday evening. The workers, who had registered on the Seva Sindhu app,




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FIDE tournament to honour first World champion

Carlsen among top stars for the Steinitz memorial blitz event




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First 3 repatriation flights to land in Mumbai on Sunday




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First-generation shaped gel reactors based on photo-patterned hybrid hydrogels

React. Chem. Eng., 2020, Advance Article
DOI: 10.1039/D0RE00109K, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Phillip R. A. Chivers, Jamie A. Kelly, Max J. S. Hill, David K. Smith
This paper reports the development of first-generation photo-patterned ring-shaped gel reactors that catalyse the hydrolysis of para-nitrophenol phosphate using a phosphatase enzyme.
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry




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Vande Bharat: First flight lands in Hyderabad

Vande Bharat: First flight lands in Hyderabad




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Sirsa demands action against Punjab DGP for Kartarpur remark




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Punjab tests first positive case for coronavirus




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Punjab confirms first death from corona, toll reaches 4




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Punjab NRI Affairs Minister thanks Centre for bringing back 113 Indians from Amsterdam




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232 FIRs registered, 111 held for curfew violation in Punjab




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230 FIRs registered, 111 people arrested for violating curfew in Punjab




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Punjab's first coronavirus patient tests negative: CM




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Bhagwat Mann, Sirsa condemn attack on Punjab cops, demand strict action




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Young COVID-19 'warrior' to facilitate Punjab's first plasma therapy




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First person who tested COVID-19 positive in Sangrur district has recovered: Punjab Special Chief Secy




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Punjab's first school ready for 1,000-bed isolation centre




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Punjab police arrests biggest drug smuggler from Sirsa




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Two drug smugglers arrested from Sirsa: Punjab DGP




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Hyderabad International Airport facilitates first Vande Bharat evacuation flight from Kuwait

Hyderabad International Airport facilitated the first arrival evacuation flight from Kuwait on Saturday.This is the first flight to Hyderabad and is p




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'Vande Bharat': First evacuation flight from London lands in Mumbai; 1,373 Indians return home from worldwide

In total, around 1,373 Indians returned to their native places from foreign countries on May 10 as eight 'Vande Bharat' flights from Dubai, Kuwait, Muscat, Sharjah, Kuala Lumpur, and Dhaka landed in India.




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DNA Exclusive: Arti Singh remembers how her first letter to mother brought them closer

Arti Singh remembered her first letter to mother on the occasion of Mothers' Day




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Chandigarh’s first patient, her brother donate blood for plasma therapy to PGI




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Narco-terrorist with K-group links held in Sirsa

Three people, including two brothers running a narco terrorism network linked to Hizbul Mujahideen commander Naikoo, who was killed by security forces in Kashmir recently, were on Saturday arrested in a joint operation conducted by Haryana Police, National Investigation Agency (NIA) and Punjab Police.




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The first X-ray diffraction measurements on Mars

The X-ray diffraction/X-ray fluorescence instrument CheMin on the Curiosity rover is a shoebox-sized device using transmission geometry and an energy-discriminating CCD detector. The instrument has returned the first X-ray diffraction data for soil and drilled samples from Mars outcrops, revealing a suite of primary basaltic minerals, amorphous components and varied hydrous alteration products including phyllosilicates.







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Crystal structure and Hirshfeld surface analysis of 4-[4-(1H-benzo[d]imidazol-2-yl)phen­oxy]phthalo­nitrile dimethyl sulfoxide monosolvate

This work presents the synthesis and structural characterization of [4-(1H-benzo[d]imidazol-2-yl)phen­oxy]phthalo­nitrile, a phthalo­nitrile derivative carrying a benzimidazole moiety. The compound crystallizes as its dimethyl sulfoxide monosolvate, C21H12N4O·(CH3)2SO. The dihedral angle between the two fused rings in the heterocyclic ring system is 2.11 (1)°, while the phenyl ring attached to the imidazole moiety is inclined by 20.7 (1)° to the latter. In the crystal structure, adjacent mol­ecules are connected by pairs of weak inter­molecular C—H⋯N hydrogen bonds into inversion dimers. N—H⋯O and C—H⋯O hydrogen bonds with R21(7) graph-set motifs are also formed between the organic mol­ecule and the disordered dimethyl sulfoxide solvent [occupancy ratio of 0.623 (5):0.377 (5) for the two sites of the sulfur atom]. Hirshfeld surface analysis and fingerprint plots were used to investigate the inter­molecular inter­actions in the crystalline state.




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Crystal structure, Hirshfeld surface analysis and HOMO–LUMO analysis of (E)-N'-(3-hy­droxy-4-meth­oxy­benzyl­idene)nicotinohydrazide monohydrate

The mol­ecule of the title Schiff base compound, C14H13N3O3·H2O, displays a trans configuration with respect to the C=N bond. The dihedral angle between the benzene and pyridine rings is 29.63 (7)°. The crystal structure features inter­molecular N—H⋯O, C—H⋯O, O—H⋯O and O—H⋯N hydrogen-bonding inter­actions, leading to the formation of a supramolecular framework. A Hirshfeld surface analysis indicates that the most important contributions to the crystal packing are from H⋯H (37.0%), O⋯H/H⋯O (23.7%)), C⋯H/H⋯C (17.6%) and N⋯H/H⋯N (11.9%) inter­actions. The title compound has also been characterized by frontier mol­ecular orbital analysis.




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Crystal structure and Hirshfeld surface analysis of a conformationally unsymmetrical bis­chalcone: (1E,4E)-1,5-bis­(4-bromo­phen­yl)penta-1,4-dien-3-one

In the title bis­chalcone, C17H12Br2O, the olefinic double bonds are almost coplanar with their attached 4-bromo­phenyl rings [torsion angles = −10.2 (4) and −6.2 (4)°], while the carbonyl double bond is in an s-trans conformation with with respect to one of the C=C bonds and an s-cis conformation with respect to the other [C=C—C=O = 160.7 (3) and −15.2 (4)°, respectively]. The dihedral angle between the 4-bromo­phenyl rings is 51.56 (2)°. In the crystal, mol­ecules are linked into a zigzag chain propagating along [001] by weak C—H⋯π inter­actions. The conformations of related bis­chalcones are surveyed and a Hirshfeld surface analysis is used to investigate and qu­antify the inter­molecular contacts.




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N-[2-(Tri­fluoro­meth­yl)phen­yl]maleamic acid: crystal structure and Hirshfeld surface analysis

The title mol­ecule, C11H8F3NO3, adopts a cis configuration across the –C=C– double bond in the side chain and the dihedral angle between the phenyl ring and side chain is 47.35 (1)°. The –COOH group adopts a syn conformation (O=C—O—H = 0°), unlike the anti conformation observed in related maleamic acids. In the crystal, inversion dimers linked by pairs of O—H⋯O hydrogen bonds are connected via N—H⋯O hydrogen bonds and C—H⋯O inter­actions into (100) sheets, which are cross-linked by another C—H⋯O inter­action to result in a three-dimensional network. The Hirshfeld surface fingerprint plots show that the highest contribution to surface contacts arises from O⋯H/H⋯O contacts (26.5%) followed by H⋯F/F⋯H (23.4%) and H⋯H (17.3%).




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Crystal structure and Hirshfeld surface analysis of (Z)-6-[(2-hy­droxy-4-methyl­anilino)­methyl­idene]-4-methyl­cyclo­hexa-2,4-dien-1-one

The title compound, C15H15NO2, is a Schiff base that exists in the keto–enamine tautomeric form and adopts a Z configuration. The mol­ecule is almost planar, with the two phenyl rings twisted relative to each other by 9.60 (18)°. There is an intra­molecular N—H⋯O hydrogen bond present forming an S(6) ring motif. In the crystal, pairs of O—H⋯O hydrogen bonds link adjacent mol­ecules into inversion dimers with an R22(18) ring motif. The dimers are linked by very weak π–π inter­actions, forming layers parallel to (overline{2}01). Hirshfeld surface analysis, two-dimensional fingerprint plots and the mol­ecular electrostatic potential surfaces were used to analyse the inter­molecular inter­actions, indicating that the most important contributions for the crystal packing are from H⋯H (55.2%), C⋯H/H⋯C (22.3%) and O⋯H/H⋯O (13.6%) inter­actions.




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Crystal structures and Hirshfeld surface analyses of 4,4'-{[1,3-phenyl­enebis(methyl­ene)]bis­(­oxy)}bis­(3-meth­oxy­benzaldehyde) and 4,4'-{[(1,4-phenyl­ene­bis(methyl­ene)]bis­(­oxy)}bis­(

The title compounds, C24H22O6 (I) and C24H22O6 (II), each crystallize with half a mol­ecule in the asymmetric unit. The whole mol­ecule of compound (I) is generated by twofold rotation symmetry, the twofold axis bis­ecting the central benzene ring. The whole mol­ecule of compound (II) is generated by inversion symmetry, the central benzene ring being located on an inversion center. In (I), the outer benzene rings are inclined to each other by 59.96 (10)° and by 36.74 (9)° to the central benzene ring. The corresponding dihedral angles in (II) are 0.0 and 89.87 (12)°. In the crystal of (I), mol­ecules are linked by C—H⋯O hydrogen bonds and C—H⋯π inter­actions, forming ribbons propagating along the [10overline{1}] direction. In the crystal of (II), mol­ecules are linked by C—H⋯O hydrogen bonds, forming a supra­molecular framework. The Hirshfeld surface analyses indicate that for both compounds the H⋯H contacts are the most significant, followed by O⋯H/H⋯O and C⋯H/H⋯C contacts.




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Crystal structure and Hirshfeld surface analysis of (Z)-6-[(2-hy­droxy-5-nitro­anilino)methyl­idene]-4-methyl­cyclo­hexa-2,4-dien-1-one

The title compound, C14H12N2O4, is a Schiff base that exists in the keto–enamine tautomeric form and adopts a Z configuration. The mol­ecule is almost planar, the rings making a dihedral angle of 4.99 (7)°. The mol­ecular structure is stabilized by an intra­molecular N—H⋯O hydrogen bond forming an S(6) ring motif. In the crystal, inversion-related mol­ecules are linked by pairs of O—H⋯O hydrogen bonds, forming dimers with an R22(18) ring motif. The dimers are linked by pairs of C—H⋯O contacts with an R22(10) ring motif, forming ribbons extended along the [2overline{1}0] direction. Hirshfeld surface analysis, two-dimensional fingerprint plots and the mol­ecular electrostatic potential surfaces were used to analyse the inter­molecular inter­actions present in the crystal, indicating that the most important contributions for the crystal packing are from H⋯H (33.9%), O⋯H/H⋯O (29.8%) and C⋯H/H⋯C (17.3%) inter­actions.




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2-[(4-Bromo­phen­yl)sulfan­yl]-2-meth­oxy-1-phenyl­ethan-1-one: crystal structure, Hirshfeld surface analysis and computational chemistry

The title compound, C15H13BrO2S, comprises three different substituents bound to a central (and chiral) methine-C atom, i.e. (4-bromo­phen­yl)sulfanyl, benzaldehyde and meth­oxy residues: crystal symmetry generates a racemic mixture. A twist in the mol­ecule is evident about the methine-C—C(carbon­yl) bond as evidenced by the O—C—C—O torsion angle of −20.8 (7)°. The dihedral angle between the bromo­benzene and phenyl rings is 43.2 (2)°, with the former disposed to lie over the oxygen atoms. The most prominent feature of the packing is the formation of helical supra­molecular chains as a result of methyl- and methine-C—H⋯O(carbon­yl) inter­actions. The chains assemble into a three-dimensional architecture without directional inter­actions between them. The nature of the weak points of contacts has been probed by a combination of Hirshfeld surface analysis, non-covalent inter­action plots and inter­action energy calculations. These point to the importance of weaker H⋯H and C—H⋯C inter­actions in the consolidation of the structure.




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Crystal structure and Hirshfeld surface analysis of new polymorph of racemic 2-phenyl­butyramide

A new polymorph of the title compound, C10H13NO, was obtained by recrystallization of the commercial product from a water/ethanol mixture (1:1 v/v). Crystals of the previously reported racemic and homochiral forms of 2-phenyl­butyramide were grown from water–aceto­nitrile solution in 1:1 volume ratio [Khrustalev et al. (2014). Cryst. Growth Des. 14, 3360–3369]. While the previously reported racemic and enanti­opure forms of the title compound adopt very similar supra­molecular structures (hydrogen-bonded ribbons), the new racemic polymorph is stabilized by a single N—H⋯O hydrogen bond that links mol­ecules into chains along the c-axis direction with an anti­parallel (centrosymmetric) packing in the crystal. Hirshfeld mol­ecular surface analysis was employed to compare the inter­molecular inter­actions in the polymorphs of the title compound.




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Hirshfeld surface analysis and crystal structure of N-(2-meth­oxy­phen­yl)acetamide

The title compound, C9H11NO2, was obtained as unexpected product from the reaction of (4-{2-benz­yloxy-5-[(E)-(3-chloro-4-methyl­phen­yl)diazen­yl]benzyl­idene}-2-phenyl­oxazol-5(4H)-one) with 2-meth­oxy­aniline in the presence of acetic acid as solvent. The amide group is not coplanar with the benzene ring, as shown by the C—N—C—O and C—N—C—C torsion angles of −2.5 (3) and 176.54 (19)°, respectively. Hirshfeld surface analysis and two-dimensional fingerprint plots indicate that the most important contributions to the crystal packing are from H⋯H (53.9%), C⋯H/H⋯C (21.4%), O⋯H/H⋯O (21.4%) and N⋯H/H⋯N (1.7%) inter­actions.