Results 31 to 40 of about 147,809 (300)

Crystal Structure of the 5-Chloro Salicylamides: Three Different Types of the H-bonding Influenced Linear Chain Formation in the Solid State

open access: yesCrystals, 2012
Three N-substituted 5-chlorosalicylamides (4-chlorophenyl, 2a; benzyl, 2b; phenethyl 2c) differing in the length of the 'linker' between the benzene ring and the amide moiety were prepared in order to compare their supramolecular architecture ...
Jiří Hanusek   +3 more
doaj   +1 more source

Lead identification and structure-activity relationships of heteroarylpyrazole arylsulfonamides as allosteric CC-chemokine receptor 4 (CCR4) antagonists [PDF]

open access: yes, 2014
A knowledge-based library of aryl 2,3-dichlorophenylsulfonamides was synthesised and screened as human CCR4 antagonists, in order to identify a suitable hit for the start of a lead-optimisation programme.
Copley, R.C.B.   +4 more
core   +1 more source

Diethyl 5,5′-thiobis[2-amino-4-(4-fluorophenyl)-1-phenyl-1H-pyrrole-3-carboxylate]

open access: yesActa Crystallographica Section E, 2008
In the title compound, C38H32F2N4O4S, the ethyl chain of the ethoxycarbonyl group displays rotational disorder with site occupancy factors ca 0.6 and 0.4. The S atom lies on a twofold rotation axis. There are both inter- and intramolecular hydrogen bonds
Ming Li, Guo-Rui Cao, Li-Rong Weng
doaj   +1 more source

Isotopic fractionation in proteins as a measure of hydrogen bond length [PDF]

open access: yes, 2015
If a deuterated molecule containing strong intramolecular hydrogen bonds is placed in a hydrogenated solvent it may preferentially exchange deuterium for hydrogen.
Athokpam, Bijyalaxmi   +2 more
core   +2 more sources

Structures of disodium hydrogen citrate monohydrate, Na2HC6H5O7(H2O), and diammonium sodium citrate, (NH4)2NaC6H5O7, from powder diffraction data

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2020
The crystal structures of disodium hydrogen citrate monohydrate, Na2HC6H5O7(H2O), and diammonium sodium citrate, (NH4)2NaC6H5O7, have been solved and refined using laboratory X-ray powder diffraction data, and optimized using density functional ...
Jerry Hong   +3 more
doaj   +1 more source

Intramolecular Hydrogen Bonds in Cardiolipin [PDF]

open access: yesBiophysical Journal, 2013
Cardiolipin was first isolated in 1941, and has since been implicated in several critical physiological roles. The distribution of cardiolipin species in tissues across prokaryotes and eukaryotes, and its concentration in membranes across which proton gradients drive energy production, is well characterized.
Gehman, John D., Sani, Marc-Antoine
openaire   +1 more source

Computational evidence for intramolecular hydrogen bonding and nonbonding X···O interactions in 2'-haloflavonols

open access: yesBeilstein Journal of Organic Chemistry, 2012
The conformational isomerism and stereoelectronic interactions present in 2'-haloflavonols were computationally analyzed. On the basis of the quantum theory of atoms in molecules (QTAIM) and natural bond orbital (NBO) analysis, the conformer stabilities ...
Tânia A. O. Fonseca   +5 more
doaj   +1 more source

N′-(5-Bromo-2-hydroxybenzylidene)-3,4,5-trihydroxybenzohydrazide dihydrate

open access: yesActa Crystallographica Section E, 2008
The title compound, C14H11BrN2O5·2H2O, crystallizes as hydrogen-bonded sheets. The 2-hydroxy group on the benzylidene group forms an intramolecular hydrogen bond to the N atom of the C=N double bond.
Hapipah M. Ali   +4 more
doaj   +1 more source

Special Issue: Intramolecular Hydrogen Bonding 2017 [PDF]

open access: yesMolecules, 2017
Even after more than a century of study [1–6], scrutiny, and detailed examination, the H-bond continues [7–12] to evoke a level of fascination that surpasses many other phenomena [...]
openaire   +5 more sources

Crystal structure of ethyl 2-(2-{1-[N-(4-bromophenyl)-2-oxo-2-phenylacetamido]-2-tert-butylamino-2-oxoethyl}-1H-pyrrol-1-yl)acetate

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
In the title compound, C28H30BrN3O5, there is an intramolecular N—H...O hydrogen bond and an intramolecular C—H...O hydrogen bond, both forming S(9) ring motifs. The planes of the 4-bromophenyl ring and the phenyl ring are inclined to that of the pyrrole
Tetsuji Moriguchi   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy