Results 31 to 40 of about 269,935 (266)

Ethyl 4-(4-hydroxyphenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate monohydrate

Acta Crystallographica Section E, 2008
There are three formula units in the asymmetric unit of the title compound, C14H16N2O4·H2O. Molecules are linked by N—H...O hydrogen bonds into dimers with the common R22(8) graph-set motif.
T. N. Guru Row, Narendra P Karambelkar, Suhas R. Pednekar, Shardul B. Chheda, Ushati Das   +4 more
doaj   +1 more source

1-(2,6-Dichlorobenzoyl)-3-(3-methoxyphenyl)thiourea [PDF]

, 2009
The two aromatic rings in the title compound, C15H12Cl2N2O2S, enclose a dihedral angle of 37.49 (6)°. The molecule exists in the solid state in its thione form with typical thiourea C-S and C-O bonds lengths, as well as shortened C-N bonds.
Bolte, Michael, Rauf, M. Khawar, Amin Badshah, Michael Bolte, M. Khawar Rauf, Badshah, Amin   +5 more
core   +1 more source

Incommensurate phase in Λ-cobalt (III) sepulchrate trinitrate governed by highly competitive N–H···O and C–H···O hydrogen bond networks [PDF]

, 2021
Phase transitions in molecular crystals are often determined by intermolecular interactions. The cage complex of [Co(C12H30N8)]3+·3NO3– is reported to undergo a disorder–order phase transition at Tc1 ≈ 133 K upon cooling.
Wolfgang, Morgenroth, Sander, van Smaalen, Somnath, Dey, Andreas, Schönleber, Finn Krebs, Larsen   +4 more
core   +1 more source

Analysis of O-H...O hydrogen bonds [PDF]

, 1977
Some geometrical parameters associated with the donor and the acceptor end of O-H...O hydrogen bonds have been analysed. The data consist of 356 hydrogen bonds from reported crystal structures of amino acids, peptides and oligosaccharides.
Ramakrishnan, C., Mitra, Jayati
core   +1 more source

2-Phenyl-N′-(2-phenylacetyl)acetohydrazide

Acta Crystallographica Section E, 2012
In the title compound, C16H16N2O2, the N′-acetylacetohydrazide group is approximately planar (r.m.s. deviation = 0.018 Å for the eight non-H atoms) and makes dihedral angles of 81.92 (6) and 65.19 (6)&#
Hatem A. Abdel-Aziz, Ching Kheng Quah, Hoong-Kun Fun   +2 more
doaj   +1 more source

2-Hydroxy­benzyl alcohol–phenanthroline (1/1) [PDF]

, 2009
Crystals of the title compound, C12H8N2·C7H8O2, were obtained during cocrystallization experiments of a compound with two hydrogen-bond donors (2-hydroxy­benzyl alcohol) with another compound containing two hydrogen-bond acceptors (phenanthroline ...
Bolte, Michael, Michael Bolte, Cuong, Ton Quoc, Cuong Quoc Ton   +3 more
core   +1 more source

Crystal structures of N-(4-chlorophenyl)-2-[(4,6-diaminopyrimidin-2-yl)sulfanyl]acetamide and N-(3-chlorophenyl)-2-[(4,6-diaminopyrimidin-2-yl)sulfanyl]acetamide

Acta Crystallographica Section E: Crystallographic Communications, 2017
The title compounds, C12H12ClN5OS, (I), and C12H12ClN5OS, (II), are 2-[(diaminopyrimidin-2-yl)sulfanyl]acetamides. Compound (II), crystallizes with two independent molecules (A and B) in the asymmetric unit. In each of the molecules, in both (I) and (II),
S. Subasri, Timiri Ajay Kumar, Barij Nayan Sinha, Venkatesan Jayaprakash, Vijayan Viswanathan, Devadasan Velmurugan   +5 more
doaj   +1 more source

Cytenamide-butyric acid (1/1) [PDF]

, 2008
Cytenamide forms a 1:1 solvate with butyric acid [systematic name: 5H-dibenzo[a,d]cycloheptatriene-5-carboxamide-butanoic acid (1/1)], C16H13NO center dot C4H8O2.
Bedford, C. T., Fabbiani, F. J. A., Shankland, Kenneth, Florence, A. J., Florence, Alastair J., Bedford, Colin T., Fabbiani, F.J.A., Johnston, A., Florence, A.J., Fabbiani, Francesca P. A., Johnston, Andrea, Shankland, K., Bedford, C.T.   +12 more
core   +1 more source

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, Ivana Císařová, Irena Matulková   +2 more
doaj   +1 more source

Expression, purification and characterization of the HIV-1 coreceptor CCR5 and its ligand RANTES and high-pressure NMR investigation of hydrogen bonds in biomolecules [PDF]

, 2010
Nuclear magnetic resonance spectroscopy is a very versatile technique for the investigation of biomolecular structures and dynamics. In this thesis, solution and solid state NMR methods have been applied to study a membrane protein and its interactions ...
Nisius, Lydia
core   +1 more source