Intramolecular Hydrogen Bonds. XVII. Intramolecular Hydrogen Bonding Involving the Mercapto Group as a Hydrogen Donor [PDF]
Bulletin of the Chemical Society of Japan, 1971 Abstract The SH stretching absorption spectra of some mercapto compounds in dilute carbon tetrachloride solutions and also in acetonitrile solutions have been measured at 20°C. Alkyl mercaptans show absorption bands which are suggestive of the rotational isomerism around the C–S bond.
Nobuo Mori +4 more
openaire +1 more source
2-Fluoroanilinium N-(2-fluorophenyl)oxamate
Acta Crystallographica Section E, 2008 The crystal structure of the title salt, C6H7FN+·C8H5FNO3−, exhibits intramolecular N—H...O and C—H...O and intermolecular N—H...O and N—H...F hydrogen-bond interactions, the intramolecular hydrogen-bond interactions ...
Mustafa Odabaşoğlu +1 more
doaj +1 more source
Molecular Seesaw: How Increased Hydrogen Bonding Can Hinder Excited-State Proton Transfer [PDF]
, 2016 A previously unexplained effect in the relative rate of excited-state intramolecular proton transfer (ESIPT) in related indole derivatives is investigated using both theory and experiment. Ultrafast spectroscopy [J. Phys. Chem.
Dawlaty, Jahan M. +3 more
core +1 more source
Acta Crystallographica Section E: Crystallographic Communications, 2019 The asymmetric unit of the title compound, C20H20N4O·0.5H2O, contains two independent organic molecules (1 and 2) and a water molecule of crystallization.
Karim Chkirate +5 more
doaj +1 more source
Conformational Preferences of 3-(Dimethylazinoyl)propanoic Acid as a Function of pH and Solvent; Intermolecular versus Intramolecular Hydrogen Bonding [PDF]
, 2009 The conformational equilibrium of 3-(dimethylazinoyl)propanoic acid (DMAPA, azinoyl = N^+(O^−) has a weak pH-dependence in D_2O, with a slight preference for trans in alkaline solutions.
Alley, Olivia J. +5 more
core +2 more sources
2-Methylamino-5-nitrobenzoic acid
Acta Crystallographica Section E, 2010 The title compound, C8H8N2O4, is almost planar (r.m.s. deviation = 0.037 Å) and an intramolecular N—H...O hydrogen bond generates an S(6) ring.
Abdul Rauf Raza +2 more
doaj +1 more source
Analysis of the conformational profiles of fenamates shows route towards novel, higher accuracy, force-fields for pharmaceuticals [PDF]
, 2015 In traditional molecular mechanics force fields, intramolecular non-bonded interactions are modelled as intermolecular interactions, and the form of the torsion potential is based on the conformational profiles of small organic molecules.
Galek, P, Price, SL, Uzoh, OG
core +1 more source
Systematic Hydrogen‐Bond Manipulations To Establish Polysaccharide Structure–Property Correlations [PDF]
, 2019 A dense hydrogen‐bond network is responsible for the mechanical and structural properties of polysaccharides. Random derivatization alters the properties of the bulk material by disrupting the hydrogen bonds, but obstructs detailed structure–function ...
Yu, Yang +9 more
core +3 more sources
2-[2-(4-Bromophenyl)hydrazinylidene]-1,3-diphenylpropane-1,3-dione
Acta Crystallographica Section E, 2011 The conformation of the title molecule, C21H15BrN2O2, is stabilized by a weak intramolecular C—H...N hydrogen bond and a strong resonance-assisted N—H...O intramolecular hydrogen bond.
Carlos Bustos +4 more
doaj +1 more source
Intermolecular-medium and intramolecular-weak hydrogen bonding chains in the crystals of chiral trifluoromethylated amino alcohols [PDF]
, 2005 A structural feature of hydrogen bonding chains found in the crystals of trifluoromethylated amino alcohols is reported. Hydrogen bondings of 3-(N,N-dialkylamino)-1,1,1-trifluoro-2-propanols construct chiral spiral hydrogen bonding chains.
Begue +28 more
core +1 more source