scholarly journals Crystal structure of (Z)-2-[(E)-2-benzylidenehydrazin-1-ylidene]-1,2-diphenylethanone

2015 ◽  
Vol 71 (1) ◽  
pp. 35-37 ◽  
Author(s):  
Abdelaziz Bouchama ◽  
Messaoud Yahiaoui ◽  
Chaabane Chiter ◽  
Zouaoui Setifi ◽  
Jim Simpson
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Three Dimensional Structure ◽  
Axis Direction ◽  
Compound C

The title compound, C21H16N2O, has an almost planar (r.m.s. deviation = 0.0074 Å) 1,2-dibenzylidenehydrazine backbone with an approximately orthogonal almost planar (r.m.s. deviation = 0.0368 Å) phenylethanone substituent on one of the imine C atoms. The dihedral angle between the two mean planes is 76.99 (4)°. In the crystal, molecules are linkedviaC—H...O hydrogen bonds and C—H...π contacts, forming a three-dimensional structure with molecules stacked along thea-axis direction.

scholarly journals Crystal structure of ethyl 2-({[(4Z)-3,5-dioxo-1-phenylpyrazolidin-4-ylidene]methyl}amino)acetate

2014 ◽  
Vol 70 (9) ◽  
pp. o938-o939
Author(s):  
Shaaban K. Mohamed ◽  
Mehmet Akkurt ◽  
Joel T. Mague ◽  
Eman A. Ahmed ◽  
Mustafa R. Albayati
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Side Chain ◽  
Three Dimensional Structure ◽  
Compound C ◽  
The Mean

The title compound, C14H15N3O4, is nearly planar, the dihedral angle between the planes of the phenyl and pyrazolidine rings being 1.13 (7) Å, and that between the plane of the pyrazolidine ring and the mean plane of the side chain [C—N—C–C(=O)—O; r.m.s. deviation = 0.024 Å] being 2.52 (7)°. This is due in large part to the presence of the intramolecular N—H...O and C—H...O hydrogen bonds. In the crystal, pairwise N—H...O hydrogen bonds form inversion dimers, which are further associated into layers, lying very close to plane (-120),viapairwise C—H...O hydrogen bonds. The layers are then weakly connected through C—H...O hydrogen bonds, forming a three-dimensional structure.

scholarly journals Crystal structure of 4-(3,4-dicyanophenoxy)-N-[3-(dimethylamino)propyl]benzamide monohydrate: a phenoxyphthalonitrile derivative

2015 ◽  
Vol 71 (9) ◽  
pp. 1042-1044
Author(s):  
Senem Çolak ◽  
Salih Zeki Yıldız ◽  
Nagihan Çaylak Delibaş ◽  
Hasan Pişkin ◽  
Tuncer Hökelek
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Three Dimensional Structure ◽  
Π Interactions ◽  
Extended Conformation ◽  
Compound C

In the title compound, C20H20N4O2·H2O, the planes of the phenoxy and phthalonitrile rings are oriented at a dihedral angle of 60.39 (5)°. The 3-(dimethylamino)propyl chain has an extended conformation and isciswith respect to the phthalonitrile ring. In the crystal, O—H...O, O—H...N and N—H...O hydrogen bonds link the molecules to form slabs parallel to (100). There are also C—H...O and C—H...N hydrogen bonds and C—H...π interactions present within the slabs. The slabs are linked by a pair of inversion-related C—H...N hydrogen bonds, involving phthalonitrile rings, forming a three-dimensional structure.

scholarly journals Reinvestigation of the crystal structure ofN-(4-chlorobenzylidene)-2-hydroxyaniline: a three-dimensional structure containing O—H...N, O—H...O and C—H...π(arene) hydrogen bonds

2018 ◽  
Vol 74 (3) ◽  
pp. 376-379 ◽  
Author(s):  
Marisiddaiah Girisha ◽  
Hemmige S. Yathirajan ◽  
Ravindranath S. Rathore ◽  
Christopher Glidewell
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Three Dimensional Structure ◽  
Compound C ◽  
Related Compounds

The molecule of the title compound, C13H10ClNO, (I), which contains an intramolecular O—H...N hydrogen bond, is almost planar: the dihedral angle between the two aryl rings is only 3.31 (9)°. The molecules of (I) are linked into sheets by two C—H...π(arene) hydrogen bonds and the sheets are linked into a three-dimensional structure by O—H...O hydrogen bonds. Comparisons are made with the structures of a number of related compounds.

scholarly journals Crystal structure of 3-deoxy-3-nitromethyl-1,2;5,6-di-O-isopropylidene-α-D-allofuranose

2016 ◽  
Vol 72 (3) ◽  
pp. 314-317
Author(s):  
Jevgeņija Lugiņina ◽  
Vitālijs Rjabovs ◽  
Dmitrijs Stepanovs
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Three Dimensional Structure ◽  
Compound C

The title compound, C13H21NO7{systematic name: (3aR,5S,6R,6aR)-5-[(R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-6-(nitromethyl)tetrahydrofuro[2,3-d][1,3]dioxole}, consists of a substituted 2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxolane skeleton. The furanose ringAadopts aoT4conformation. The fused dioxolane ringBand the substituent dioxolane ringCalso have twisted conformations. There are no strong hydrogen bonds in the crystal structure: only weak C—H...O contacts are present, which link the molecules to form a three-dimensional structure.

scholarly journals {(3S,5R)-5-(2,4-Difluorophenyl)-5-[(1H-1,2,4-triazol-1-yl)methyl]tetrahydrofuran-3-yl}methyl 4-methylbenzenesulfonate

IUCrData ◽  
2017 ◽  
Vol 2 (2) ◽  
Author(s):  
Qing-Shuang Ma ◽  
Xiao-Guang Wang ◽  
Lei Xu ◽  
Sun Bin ◽  
Dao-Hong Xia ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Three Dimensional Structure ◽  
Axis Direction ◽  
Envelope Conformation ◽  
Compound C ◽  
Best Fit

In the title compound, C21H21F2N3O4S, the tetrahydrofuran ring adopts an envelope conformation with the β-C atom positioned at the flap. The triazole, difluorophenyl and tolyl rings of the various substituents on the tetrahydrofuran ring are inclined at 77.88 (12), 83.81 (10) and 81.00 (10)°, respectively, to the best-fit mean plane through the five atoms of the tetrahydrofuran ring. In the crystal, weak C—H...O and C—H...F hydrogen bonds link the molecules into a three-dimensional structure, with molecules stacked along thea-axis direction.

scholarly journals 4-Cyano-1-methylpyridinium iodide

2012 ◽  
Vol 68 (8) ◽  
pp. o2514-o2514 ◽  
Author(s):  
Michael N. Kammer ◽  
Lynn V. Koplitz ◽  
Joel T. Mague
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Three Dimensional Structure ◽  
Compound C ◽  
Normal Distance

In the crystal structure of the title compound, C7H7N2+·I−, the cations form inversion-related dimersviaweak pairwise C—H...N hydrogen bonds. In the dimers, the pyridinium rings are parallel to one another with their mean planes separated by a normal distance ofca0.28 Å. Weak C—H...N interactions between adjacent dimers generate a layer lying parallel to (10-1). The remaining H atoms form C—H...I interactions, which link the layers into a three-dimensional structure.

scholarly journals Crystal structure of 3,13-dimethoxy-5,6,10,11-tetrahydrofuro[3,4-i][5]helicene-7,9-dione

2014 ◽  
Vol 70 (11) ◽  
pp. 418-420 ◽  
Author(s):  
Thanasat Sooksimuang ◽  
Siriporn Kamtonwong ◽  
Waraporn Parnchan ◽  
Laongdao Kangkaew ◽  
Somboon Sahasithiwat
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Layered Structure ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Asymmetric Unit ◽  
Three Dimensional Structure ◽  
Compound C ◽  
Independent Molecules

The title compound, C26H20O5, crystallizes with two independent molecules (AandB) in the asymmetric unit, which differ primarily in the location of the –OCH3groups. In the crystal, the molecules form a layered structure parallel to (10-1) by C—H...O hydrogen-bonded networks. Adjacent layers are also linked by further C—H...O hydrogen bonds, forming a three-dimensional structure.

scholarly journals Crystal structure of 5-[bis(methylsulfonyl)methyl]-1,3-dimethyl-5-(methylsulfonyl)pyrimidine-2,4,6(1H,3H,5H)-trione

2015 ◽  
Vol 71 (1) ◽  
pp. o58-o59 ◽  
Author(s):  
Eyad Mallah ◽  
Ahmed Al-Sheikh ◽  
Kamal Sweidan ◽  
Wael Abu Dayyih ◽  
Manfred Steimann
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Barbituric Acid ◽  
Three Dimensional ◽  
Pyrimidine Ring ◽  
Dimensional Structure ◽  
Acid Moiety ◽  
Compound C

In the title compound, C10H16N2O9S3, the pyrimidine ring of the 1,3-dimethyl barbituric acid moiety has an envelope conformation with the C atom carrying the methylsulfonyl and bis(methylsulfonyl)methyl substituents as the flap. The dihedral angle between mean plane of the pyrimidine ring and the S/C/S plane is 72.4 (3)°. In the crystal, molecules are linkedviaC—H...O hydrogen bonds, forming a three-dimensional structure.

scholarly journals 1-(4-Nitrophenyl)-2-({4-phenyl-5-[(p-tolyloxy)methyl]-4H-1,2,4-triazol-3-yl}sulfanyl)acetamide

IUCrData ◽  
2016 ◽  
Vol 1 (10) ◽  
Author(s):  
Elham A. Al-Taifi ◽  
Manpreet Kaur ◽  
Mehmet Akkurt ◽  
Shaaban K. Mohamed ◽  
Jerry P. Jasinski
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Three Dimensional Structure ◽  
Π Interactions ◽  
Compound C ◽  
Centrosymmetric Dimers ◽  
Ring Motif

In the crystal structure of the title compound, C24H21N5O4S, centrosymmetric dimers with an R 2 2(16) ring motif, lying in the (010) plane, are formed as a result of pairwise N—H...N hydrogen bonds. These dimers further interact through C—H...O and C—H...π interactions to construct a complex extended three-dimensional structure.

scholarly journals 5-Chloro-2-(2-fluorophenyl)-7-methyl-3-methylsulfinyl-1-benzofuran

2014 ◽  
Vol 70 (6) ◽  
pp. o706-o706
Author(s):  
Hong Dae Choi ◽  
Uk Lee
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Three Dimensional Structure ◽  
Π Interactions ◽  
Compound C ◽  
The Mean

In the title compound, C16H12ClFO2S, the dihedral angle between the mean planes of the benzofuran and 2-fluorophenyl rings is 34.85 (6)°. In the crystal, molecules are linkedviapairs of C—H...O hydrogen bonds, forming zigzag chains along [001]. The chains are linked by C—H...π interactions, forming a three-dimensional structure.

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