Results 121 to 130 of about 1,209,817 (305)

Crystal structure and Hirshfeld surface analysis of novel pyrazole derivatives [PDF]

open access: yesActa Crystallographica Section A Foundations and Advances, 2017
New pyrozole derivatives, 3-(benzo[d][1,3]dioxol-5-yl)-5-(3-methylthiophen-2-yl)-4,5-dihydro-1H-pyrazole-1-carboxamide (I) and 3-(benzo[d][1,3]dioxol-5-yl)-5-(3-methylthiophen-2-yl)-4,5-dihydro-1H-pyrazole-1-carbothioamide (II) are synthesized. These compounds were characterized using elemental analyses, ¹H NMR, ¹³C NMR and mass spectral studies ...
Karthik Kumara   +2 more
openaire   +1 more source

Mercury(II)‐Triggered Oxidase‐Like Activity of CoSe2@Au NPs for Dual‐Mode Detection in Food

open access: yesFood Frontiers, EarlyView.
ABSTRACT Owing to the strong and selective coordination with Hg2+, the high‐stable gold‐anchored cobalt selenide nanomaterials (CoSe2@Au NPs) were prepared via multi‐step wet chemical synthesis method for the dual‐mode sensing of Hg2+ in food samples. The interplay between the 3d orbital of Co and the 6s orbital of Hg can enhance the binding ability of
Jingkang Wang   +6 more
wiley   +1 more source

Crystal structure and Hirshfeld analysis of the kryptoracemate: bis(mefloquinium) chloride p-fluorobenzenesulphonate [PDF]

open access: yes, 2016
The crystal structure analysis of the bis(mefloquinium) chloride p-fluorobenzenesulphonate salt reveals a rare example of a kryptoracemate given that the cations exhibit a non-crystallographic enantiomeric relationship.
Jotani, Mukesh M.   +2 more
core   +1 more source

Crystal Structures and Intermolecular Interactions in α$\alpha$‐ and β$\beta$‐phosgene

open access: yesAngewandte Chemie, Volume 138, Issue 2, 9 January 2026.
Despite its notorious reputation as a war gas, phosgene (COCl2${\rm COCl}_2$) is one of the most important intermediate chemicals in industry. In this study, we present the crystal structures of two phosgene polymorphs as deduced from powder neutron diffraction and show which intermolecular interactions stabilise the different modifications.
Sven Ringelband   +6 more
wiley   +2 more sources

White‐Light Flexible Crystal With 180° Folding Induced by Halogen‐Bond Network in Organic‐Inorganic Hybrid Perovskite

open access: yesRare Metals, EarlyView.
ABSTRACT Organic‐inorganic hybrid perovskites (OIHPs) with white‐light emission have significant potential in solid‐state lighting and display due to the designable structure and excellent luminescent properties. However, OIHPs are prone to damage during bending due to the brittleness of crystals, which limits their application in the field of flexible
Jinyu Xu   +8 more
wiley   +1 more source

Structural systematics of aryl-1,3-dithiane derivatives: crystal and energy-minimised structures, and Hirshfeld surface analysis [PDF]

open access: yes, 2016
The crystal structure analysis of three aryl-1,3-dithiane derivatives, with aryl=4-methylphenyl (1), 4-chlorophenyl (2) and 2,4-dichlorophenyl (3), shows the three molecules to have very similar conformations, with the aryl ring lying on an approximate ...
Gozhina, Olga   +4 more
core   +1 more source

Enhanced Selectivity of Chalcogen Bonding over Halogen Bonding Catalyzed C‐glycosylation Through Differentiated Intermediate Activation

open access: yesAngewandte Chemie, Volume 138, Issue 2, 9 January 2026.
By harnessing chalcogen bonding (ChB) catalysis, an exclusive access into a highly stereoselective strain‐release C‐glycosylation pathway was discovered. This was surprisingly not replicable by the conceptually similar halogen bonding (XB) catalysis.
Hao Guo, Charles C. J. Loh
wiley   +2 more sources

Simultaneous Formation of Arsenic Nitride Chalcogenides As3NS3 and As3NSe3 and Arsenic–Chalcogen Zintl Anions by Ammonothermal Reactions

open access: yesZeitschrift für anorganische und allgemeine Chemie, EarlyView.
Mn, As, and S or Se react in liquid NH3 to the Zintl ions (As4S6)2– and (As2Se6)2–. Simultaneously, the arsenic nitride chalcogenides As3NS3 and As3NSe3 are formed. Their isotypic structures contain planar trigonal NAs3 groups connected via chalcogen bridges to 1D‐strands forming channels that can host solvent molecules.
Frederik Hermann   +4 more
wiley   +1 more source

Crystal structure and Hirshfeld surface analysis of 2-picolyllithium·3thf

open access: yesActa Crystallographica Section E Crystallographic Communications
In the title compound, (2-methylidene-1,2-dihydropyridinium-κN)tris(tetrahydrofuran-κO)lithium, [Li(C6H6N)(C4H8O)3], the lithium ion adopts a distorted LiNO3 tetrahedral coordination geometry and the 2-picolyl anion adopts its enamido form with the lithium ion lying close to the plane of the pyridine ring. A methylene group of one of the thf ligands is
Tristan Mairath   +2 more
openaire   +3 more sources

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