Results 21 to 30 of about 772,665 (325)
“Hydridic Hydrogen-Bond Donors” Are Not Hydrogen-Bond Donors [PDF]
Journal of the American Chemical SocietyHerein, we dismiss a recent proposal by Civiš, Hobza, and co-workers to modify the IUPAC definition of hydrogen bonds in order to expand the scope from protonic Y-Hδ+ to hydridic Y-Hδ- hydrogen-bond donor fragments [J. Am. Chem. Soc. 2023, 145, 8550].
Lucas de Azevedo Santos +3 more
openaire +4 more sources
Tetramethylammonium dihydrogen phosphate hemihydrate
Acta Crystallographica Section E, 2009 In the crystal structure of the title compound, C4H12N+·H2PO4−·0.5H2O, the anions form an infinite hydrogen-bonded chain along the [1overline{1}0] direction.
Kyoko Fujita +3 more
doaj +1 more source
(1R,2S)-Methyl 1-(4-chloro-phen-yl)-3-oxo-1,2,3,4-tetra-hydro-cyclo-penta-[b]indole-2-carboxyl-ate 0.2-hydrate [PDF]
, 2011 The title compound, C(19)H(14)ClNO(3)·0.2H(2)O, crystallizes with five mol-ecules and a disordered water mol-ecule in the asymmetric unit. Four of the five mol-ecules form hydrogen-bonded dimers via N-H⋯O hydrogen bonds towards another symmetry ...
Bolte, Michael, Raja, Sadiya
core +3 more sources
Intramolecular hydrogen bonds in 1,4-dihydropyridine derivatives [PDF]
Royal Society Open Science, 2018 1,4-Dihydropyridine (1,4-DHP) derivatives have been synthesized and characterized by 1H, 13C, 15N nuclear magnetic resonance (NMR) spectroscopy, secondary proton/deuterium 13C isotope shifts, variable temperature 1H NMR experiments and quantum-chemical ...
M. Petrova +4 more
doaj +1 more source
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, Ton, Quoc-Cuong
core +2 more sources
4-Amino-1H-1,2,4-triazol-1-ium nitrate
Acta Crystallographica Section E, 2011 The non-centrosymmetric crystal structure of the novel semi-organic title compound, C2H5N4+·NO3−, is based on alternating layers of 4-amino-1H-1,2,4-triazolinium cations (formed by parallel chains of cations mediated by weak C& ...
Ivan Němec +2 more
doaj +1 more source
Enzymatic functionalization of carbon-hydrogen bonds [PDF]
, 2011 The development of new catalytic methods to functionalize carbon–hydrogen (C–H) bonds continues to progress at a rapid pace due to the significant economic and environmental benefits of these transformations over traditional synthetic methods.
Arnold, Frances H. +2 more
core +1 more source
2-Amino-4-methylpyrimidinium dihydrogen phosphate
Acta Crystallographica Section E, 2013 A charge-assisted hydrogen-bonding network involving N—H...O and O—H...O hydrogen bonds stabilizes the crystal of the title salt, C5H8N3+·H2PO4−.
Sajesh P. Thomas, Jyothi Sunkari
doaj +1 more source
AIP Advances, 2023 Molecular crowding agents can significantly suppress water activity by affecting hydrogen bonds. Here, we performed molecular dynamics simulation to study the effect of temperature and concentration of sulfolane, a crowding agent, on aqueous electrolytes.
Wenyu Zhang +5 more
doaj +1 more source