scholarly journals 2-Ethyl-3-[(R)-2-phenylbutanamido]quinazolin-4(3H)-one monohydrate

2014 ◽  
Vol 70 (4) ◽  
pp. o467-o467 ◽  
Author(s):  
Gamal A. El-Hiti ◽  
Keith Smith ◽  
Amany S. Hegazy ◽  
D. Heulyn Jones ◽  
Benson M. Kariuki
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Phenyl Ring ◽  
Ring System ◽  
Dihedral Angles ◽  
Water Molecules ◽  
Compound C ◽  
Ring Motif ◽  
Hydrogen Bonded

In the title compound, C20H21N3O2·H2O (EQR·H2O), the quinazoline ring system forms dihedral angles of 53.1 (1) and 85.6 (1)° with the phenyl ring and the amide link, respectively. In the crystal, O—H...O hydrogen bonds link two EQR and two water molecules into a centrosymmetricR44(18) ring motif. N—H...O hydrogen bonds further link these hydrogen-bonded fragments into columns extending in [010].

scholarly journals 3-(4-Fluorobenzoyl)-4-(4-fluorophenyl)-4-hydroxy-2,6-diphenylcyclohexane-1,1-dicarbonitrile

2014 ◽  
Vol 70 (6) ◽  
pp. o736-o737
Author(s):  
B. Narayana ◽  
M Sapnakumari ◽  
Balladka K. Sarojini ◽  
Jerry P. Jasinski
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Phenyl Ring ◽  
Chair Conformation ◽  
Dihedral Angles ◽  
Compound C ◽  
Phenyl Rings ◽  
Ring Motif

In the title compound, C33H24F2N2O2, the cyclohexane ring adopts a slightly distorted chair conformation. The dihedral angle between the planes of the phenyl rings is 71.80 (9)°, while the planes of the fluorophenyl and fluorobenzoyl rings are inclined to one another by 31.04 (10)°. The dihedral angles between the planes of the phenyl ring adjacent to the 4-hydroxy group and those of the the fluorophenyl and fluorobenzoyl rings are 51.64 (10) and 34.31 (10)°, respectively, while the corresponding angles for the phenyl ring adjacent to the 3-(4-fluorobenzoyl) group are 57.51 (9) and 85.02 (10)°, respectively. An intramolecular O—H...O hydrogen bond generates anS(6) ring motif. In the crystal, molecules are linkedviapairs of O—H...N hydrogen bonds, forming inversion dimers. The dimers are linkedviaC—H...N and C—H...O hydrogen bonds, forming chains along thec-axis direction. C—H...F hydrogen bonds link the chains into sheets lying parallel to thebcplane.

scholarly journals 3-Benzyl-7-(2,4-dichlorophenyl)-4H-1,3,4-thiadiazolo[2,3-c][1,2,4]triazin-4-one

2012 ◽  
Vol 68 (6) ◽  
pp. o1736-o1737
Author(s):  
Hoong-Kun Fun ◽  
Suhana Arshad ◽  
B. K. Sarojini ◽  
U. A. Imran ◽  
B.G. Krishna
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Phenyl Ring ◽  
Ring System ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Triazine Ring ◽  
Compound C ◽  
Graph Set

In the title compound, C17H10Cl2N4OS, the phenyl ring and the H atoms attached to the adjacent C atom are disordered over two positions, with refined site occupancies of 0.509 (8) and 0.491 (8). The planar 4H-1,3,4-thiadiazolo[2,3-c][1,2,4]triazine ring system [maximum deviation = 0.048 (3) Å] forms dihedral angles of 76.9 (5), 74.9 (5) and 9.88 (12)°, respectively, with the major and minor parts of the disordered phenyl ring and with the dichloro-substituted benzene ring. In the crystal, pairs of C—H...O hydrogen bonds link the molecules, forming inversion dimers with an R 2 2(18) graph-set motif. A short S...N contact of 2.801 (3) Å is observed between the dimers.

scholarly journals Crystal structure of ethyl 6-bromo-2-[(E)-2-phenylethenyl]quinoline-4-carboxylate

2015 ◽  
Vol 71 (2) ◽  
pp. o121-o121 ◽  
Author(s):  
T. O. Shrungesh Kumar ◽  
S. Naveen ◽  
M. N. Kumara ◽  
K. M. Mahadevan ◽  
N. K. Lokanath
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Phenyl Ring ◽  
Ring System ◽  
Ethynyl Group ◽  
Bond Forming ◽  
Compound C ◽  
Ring Motif

In the title compound, C20H16BrNO2, the dihedral angle between the quinolone ring system mean plane (r.m.s. deviation = 0.018 Å) and the phenyl ring bridged by the ethynyl group, is 25.44 (14)°. There is an intramolecular C—H...O hydrogen bond forming anS(6) ring motif. In the crystal, molecules are linkedviaC—H...O hydrogen bonds forming chains propagating along theb-axis direction.

scholarly journals Crystal structure of 1,2-bis(4-fluorophenyl)-1-hydroxy-2,3,8-trimethoxyacenaphthene: formation of a five-membered intramolecular O—H...O hydrogen-bonded ring

2021 ◽  
Vol 77 (2) ◽  
pp. 175-179
Author(s):  
Hiroaki Iitsuka ◽  
Kun Li ◽  
Miyuki Kobayashi ◽  
Kikuko Iida ◽  
Noriyuki Yonezawa ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Ring System ◽  
Dihedral Angles ◽  
Naphthalene Ring ◽  
Compound C ◽  
Methoxy Groups ◽  
Dimeric Aggregates ◽  
Hydrogen Bonded

The structure of the title compound, C27H22F2O4, at 193 K has triclinic (P\overline{1}) symmetry. The hydroxy and methoxy groups at the 1,2-positions of the acenaphthene core display a cis configuration. Both substituents are involved in the formation of a five-membered intramolecular O—H...O hydrogen-bonded ring. The 4-fluorophenyl rings make dihedral angles of 87.02 (7) and 51.86 (8)° with the naphthalene ring system. In the crystal, a pair of non-classical C—H...O hydrogen bonds forms centrosymmetric dimeric structures. The dimeric aggregates are linked in the ac plane through non-classical C—H...F hydrogen bonds and C—H...π interactions.

scholarly journals Ethyl 4-anilino-2-methyl-5-oxo-1-phenyl-2,5-dihydro-1H-pyrrole-2-carboxylate

2013 ◽  
Vol 69 (12) ◽  
pp. o1757-o1758 ◽  
Author(s):  
Mehmet Akkurt ◽  
Shaaban K. Mohamed ◽  
Mahmoud A. A. Elremaily ◽  
Francisco Santoyo-Gonzalez ◽  
Mustafa R. Albayati
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Phenyl Ring ◽  
Pyrrole Ring ◽  
Dihedral Angles ◽  
Π Interactions ◽  
Compound C ◽  
Ring Motif

In the title compound, C20H20N2O3, the central 2,5-dihydro-1H-pyrrole ring [r.m.s. deviation = 0.014 (1) Å] is oriented at dihedral angles of 77.81 (6) and 25.33 (6)°, respectively, to the attached phenyl ring and the aniline phenyl ring. An intramolecular N—H...O hydrogen bond occurs. In the crystal, molecules are linked through pairs of N—H...O hydrogen bonds, forming inversion dimers with anR22(10) ring motif. Two weak C—H...π interactions are also observed.

scholarly journals 2-[(1-Benzyl-1H-1,2,3-triazol-4-yl)methoxy]-1-naphthaldehyde

IUCrData ◽  
2019 ◽  
Vol 4 (11) ◽  
Author(s):  
R. Vishnupriya ◽  
M. Venkateshan ◽  
J. Suresh ◽  
G. Jaabil ◽  
A. Ponnuswamy ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Phenyl Ring ◽  
Triazole Ring ◽  
Ring System ◽  
Dihedral Angles ◽  
Naphthalene Ring ◽  
Axis Direction ◽  
Compound C

In the title compound, C21H17N3O2, the triazole ring system is inclined at dihedral angles of 4.14 (18) and 69.24 (11)° with the naphthalene ring system and phenyl ring, respectively. In the crystal, molecules are linked by C—H...O hydrogen bonds into double columns propagating along the b-axis direction.

scholarly journals Ethyl 2-(6-bromo-2-phenyl-1H-imidazo[4,5-b]pyridin-1-yl)acetate

IUCrData ◽  
2016 ◽  
Vol 1 (5) ◽  
Author(s):  
Mohammed Yassin Hjouji ◽  
Youssef Kandri Rodi ◽  
Joel T. Mague ◽  
Younes Ouzidan ◽  
El Mokhtar Essassi ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Phenyl Ring ◽  
Ring System ◽  
Membered Ring ◽  
Dihedral Angles ◽  
Compound C ◽  
Fused Ring ◽  
The Mean ◽  
Fused Ring System

In the title compound, C16H14BrN3O2, the fused-ring system is essentially planar, with the largest deviation from the mean plane being 0.0216 (15) Å for the substituted N atom of the five-membered ring, the plane of which makes dihedral angles of 28.50 (7) and 77.48 (7)° with the terminal phenyl ring and the ethoxycarbonylmethyl group mean planes, respectively. In the crystal, C—H...N hydrogen bonds link the molecules into inversion dimers. These combine with weak C—H...N contacts to stack the molecules into columns along theb-axis direction.

scholarly journals N-(3-Chloro-4-ethoxy-1-methyl-1H-indazol-5-yl)-4-methoxybenzenesulfonamide

2014 ◽  
Vol 70 (6) ◽  
pp. o679-o679 ◽  
Author(s):  
Hakima Chicha ◽  
El Mostapha Rakib ◽  
Abdellah Hannioui ◽  
Mohamed Saadi ◽  
Lahcen El Ammari
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Ring System ◽  
Dihedral Angles ◽  
Ethoxy Group ◽  
Π Interactions ◽  
Compound C ◽  
The Mean

The indazole ring system of the title compound, C17H18ClN3O4S, is almost planar (r.m.s. deviation = 0.0113 Å) and forms dihedral angles of 32.22 (8) and 57.5 (3)° with the benzene ring and the mean plane through the 4-ethoxy group, respectively. In the crystal, molecules are connected by pairs of N—H...O hydrogen bonds into inversion dimers, which are further linked by π–π interactions between the diazole rings [intercentroid distance = 3.4946 (11) Å], forming chains parallel to [101].

scholarly journals Crystal structure ofN1-phenyl-N4-[(quinolin-2-yl)methylidene]benzene-1,4-diamine

2014 ◽  
Vol 70 (9) ◽  
pp. o905-o906 ◽  
Author(s):  
Md. Serajul Haque Faizi ◽  
Ashraf Mashrai ◽  
Saleem Garandal ◽  
M. Shahid
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Benzene Ring ◽  
Title Compound ◽  
Phenyl Ring ◽  
Bond Angle ◽  
Ring System ◽  
Dihedral Angles ◽  
Quinoline Ring ◽  
Compound C

In the title compound, C22H17N3, the dihedral angles between the central benzene ring and the terminal phenyl ring and quinoline ring system (r.m.s. deviation = 0.027 Å) are 44.72 (7) and 9.02 (4)°, respectively, and the bond-angle sum at the amine N atom is 359.9°. In the crystal, the N—H group is not involved in hydrogen bonding and the molecules are linked by weak C—H...π interactions, generating [010] chains.

scholarly journals 2-Thioureido-1H-benzimidazol-3-ium chloride monohydrate

2014 ◽  
Vol 70 (5) ◽  
pp. o553-o553
Author(s):  
C. N. Sundaresan ◽  
Dheeraj Kumar Singh ◽  
Jagadeesh Babu Nanubolu
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Ring System ◽  
Water Molecules ◽  
Compound C ◽  
Dimensional Network ◽  
Centroid Distance ◽  
The Mean ◽  
Chloride Monohydrate

In the title compound, C8H9N4S+·Cl−·H2O, the cation is approximately planar, with a dihedral angle of 7.71 (8)° between the mean planes of the benzoimidazole ring system and the thiourea unit. In the crystal, cations, anions and water molecules of crystallization are linked by O—H...Cl, N—H...O, N—H...Cl and N—H...S hydrogen bonds into a three-dimensional network. π–π stacking is observed between the benzene and imidazole rings of neighbouring molecules, the centroid–centroid distance being 3.5774 (11) Å.

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