Estudo teórico sobre o efeito de substituintes na estrutura eletrônica de supermoléculas com múltiplas ligações de hidrogênio intermoleculares [PDF]
, 2013 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2013Sistemas que se conectam através de múltiplas ligações de hidrogênio são a pedra angular ...
Lopez, Alfredo Henrique Duarte
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Weak, Improper, C−O···H−C Hydrogen Bonds in the Dimethyl Ether Dimer [PDF]
, 2016 The ground-state rotational spectrum of the dimethyl ether dimer, (DME)2, has been studied by molecular beam Fourier transform microwave and free jet millimeter wave absorption spectroscopies. The molecular beam Fourier transform microwave spectra of the
José L. Alonso (2492950) +7 more
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(Z)-2-(4-Nitrophenyl)-3-[4-(pyridin-4-ylmethoxy)phenyl]acrylonitrile
IUCrData, 2018 The title compound, C21H15N3O3, features an essentially planar molecule (r.m.s. deviation for all non-H atoms = 0.090 Å). An intramolecular C—H...N hydrogen bond occurs.
Qingpeng Rao +3 more
doaj +1 more source
C–H···O Hydrogen Bonds in the Nuclear Receptor RARγ—a Potential Tool for Drug Selectivity [PDF]
, 2002 Hydrogen bonds between polarized atoms play a crucial role in protein interactions and are often used in drug design, which usually neglects the potential of C–H···O hydrogen bonds.
Bruno P Klaholz +4 more
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1,2-Diazinium hydrogen chloranilate
Acta Crystallographica Section E, 2008 In the crystal structure of the title compound, C4H5N2+·C6HCl2O4−, there are three crystallographically independent 1,2-diazinium cations and hydrogen chloranilate anions.
Kazuma Gotoh, Hiroyuki Ishida
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Crystallographic evidence for C(α)-H...O = C hydrogen bonds in a collagen triple helix [PDF]
, 1996 The crystal structure of the collagen triple-helical peptide (Pro-Hyp-Gly)4-Pro-Hyp-Ala-(Pro-Hyp-Gly)5 shows evidence for the existence of interchain contacts between α-carbon hydrogens from Gly and Hyp residues, and carbonyl groups from Gly and Pro ...
Bella, Jordi, Berman, Helen M.
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2-[4,5-Diphenyl-2-(pyridin-4-yl)-1H-imidazol-1-yl]ethanol
IUCrData, 2017 The basic building blocks of the three-dimensional structure of the title compound, C22H19N3O, are helical chains running along the [101] direction and formed by O—H...N hydrogen bonds. C—H...O hydrogen bonds between chains generate sheets which are then
Joel T. Mague +4 more
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Hydrogen in Nominally Anhydrous Crustal Minerals [PDF]
, 2003 Systematic infrared and nuclear magnetic resonance investigations of common crustal minerals were undertaken to better understand the geologic significance of minor components of structural hydrous species within these nominally anhydrous minerals ...
Johnson, Elizabeth Ann
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8-[(1E)-1-(2-Aminophenyliminio)ethyl]-2-oxo-2H-chromen-7-olate
Acta Crystallographica Section E, 2010 The title Schiff base, C17H14N2O3, exists as an NH tautomer with the H atom of the phenol group transferred to the imine N atom. The iminium H atom is involved in a strong intramolecular N+—H...O− hydrogen bond to the phenolate O atom,
E. S. Aazam +3 more
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Intra- and intermolecular proton transfer in 2,6-diaminopyridinium 4-hydroxypyridin-1-ium-2,6-dicarboxylate [PDF]
, 2012 Chelidamic acid (4-hydroxypyridine-2,6-dicarboxylic acid) and 2,6-diaminopyridine react to form the title salt, C5H8N3+·C7H4NO5-; there are two formula units in the asymmetric unit.
Bolte, Michael +3 more
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