Results 11 to 20 of about 289,623 (333)

Quantifying hydrogen bonding using electrically tunable nanoconfined water [PDF]

open access: yesNature Communications
Hydrogen bonding plays a crucial role in biology and technology, yet it remains poorly understood and quantified despite its fundamental importance. Traditional models, which describe hydrogen bonds as electrostatic interactions between electropositive ...
Ziwei Wang   +13 more
doaj   +3 more sources

Hydrogen Bonding in Amorphous Indomethacin [PDF]

open access: yesPharmaceutics
Amorphous Indomethacin has enhanced bioavailability over its crystalline forms, yet amorphous forms can still possess a wide variety of structures. Here, Empirical Potential Structure Refinement (EPSR) has been used to provide accurate molecular models ...
C. J. Benmore   +5 more
doaj   +2 more sources

Structure–property relationships in dicyanopyrazinoquinoxalines and their hydrogen-bonding-capable dihydropyrazinoquinoxalinedione derivatives [PDF]

open access: yesBeilstein Journal of Organic Chemistry
Presented here is the design, synthesis, and study of a variety of novel hydrogen-bonding-capable π-conjugated N-heteroacenes, 1,4-dihydropyrazino[2,3-b]quinoxaline-2,3-diones (DPQDs).
Tural N. Akhmedov   +7 more
doaj   +2 more sources

A quantum chemical study of the interaction of carboxylic acids with DMSO

open access: yesMongolian Journal of Chemistry, 2022
Quantum chemical computational methods, which use quantum mechanics and molecular dynamics theory, have developed rapidly in the past few decades, and quantum chemical computation has penetrated almost all fields of chemistry.
Mu Ren   +3 more
doaj   +1 more source

Elucidation of Charge Contribution in Iridium-Chelated Hydrogen-Bonding Systems

open access: yesFrontiers in Chemistry, 2021
We present two iridium complexes 1H+ and 2H+ that contain cationic ligands to extend the knowledge of charge-assisted hydrogen bonding (CAHB), which counts among the strongest non-covalent bonding interactions.
Barbora Balónová, Barry A. Blight
doaj   +1 more source

Intramolecular Hydrogen Bonding 2021

open access: yesMolecules, 2021
Undoubtedly, hydrogen bonds occupy a leading place in the rich world of intermolecular interactions [...]
Mirosław Jabłoński
doaj   +1 more source

Ethidium heptafluorobutyrate

open access: yesIUCrData, 2022
In the title compound (systematic name: 3,8-diamino-5-ethyl-6-phenylphenanthridin-5-ium 2,2,3,3,4,4,4-heptafluorobutyrate), C21H20N3+·C4F7O2−, two ethidium ions, C21H20N3+ form a dimerized structure due to π–π interactions, even though they are ...
Runa Shimazaki, Masaaki Sadakiyo
doaj   +1 more source

Synthesis and structure of clozapine N-oxide hemi(hydrochloride): an infinite hydrogen-bonded poly[n]catenane

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2022
The structure of the title compound, 2C18H19ClN4O·HCl or (CNO)2·HCl (C36H39Cl3N8O2), at 100 K has tetragonal (I4/m) symmetry. The dihedral angle between the benzene rings of the fused ring system of the CNO molecule is 40.08 (6)° and the equivalent angle
Phillip L. van der Peet   +5 more
doaj   +1 more source

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