scholarly journals 2-Amino-N′-phenylbenzohydrazide

2012 ◽  
Vol 68 (6) ◽  
pp. o1847-o1847
Author(s):  
Víctor Kesternich ◽  
Paulo Gahona ◽  
Marcia Pérez-Fehrmann ◽  
Iván Brito ◽  
Matías López-Rodríguez
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Dihedral Angles ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Aromatic Rings ◽  
Compound C ◽  
Dimensional Network ◽  
Centroid Distance ◽  
Phenyl Rings

In the title compound, C13H13N3O, the NNCO unit forms dihedral angles of 35.8 (1) and 84.0 (1)° with the benzene and phenyl rings, respectively. The dihedral angles between the aromatic rings is 61.2 (1)°. An intramolecular N—H...O hydrogen bond occurs. In the crystal, molecules are linked by weak N—H...O hydrogen bonds into C(4) chains parallel to the c axis. Neighbouring chains are linked by weak N—H...N hydrogen bonds, forming R 4 4(20) rings, and resulting in the formation of a two-dimensional network lying parallel to (010). The packing also features π–π stacking interactions between phenyl rings [centroid–centroid distance = 3.803 (2) Å].

scholarly journals N1-[(1H-Imidazol-2-yl)methylidene]-N4-phenylbenzene-1,4-diamine

2014 ◽  
Vol 70 (7) ◽  
pp. o806-o806 ◽  
Author(s):  
Md. Serajul Haque Faizi ◽  
Ashraf Mashrai ◽  
M. Shahid ◽  
Musheer Ahmad
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Layered Structure ◽  
Dihedral Angles ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Compound C ◽  
Centroid Distance ◽  
Phenyl Rings ◽  
A Chain

The title compound, C16H14N4, is non-planar with dihedral angles between the planes of the imidazole and phenylenediamine rings of 30.66 (4)° and between the planes of the phenylenediamine andN-phenyl rings of 56.63 (7)°. In the crystal, molecules are connected by N—H...N hydrogen bonds, generating a chain extending along theb-axis direction. The crystal structure is also stabilized by C—H...π interactions betweenN-phenyl and imidazole rings and slipped π–π stacking interactions between imidazole rings [centroid–centroid distance = 3.516 (4) Å] giving an overall two-dimensional layered structure lying parallel to (010).

scholarly journals 2-(3,4-Dimethoxyphenyl)-1-pentyl-4,5-diphenyl-1H-imidazole

2013 ◽  
Vol 69 (12) ◽  
pp. o1833-o1834
Author(s):  
Shaaban K. Mohamed ◽  
Mehmet Akkurt ◽  
Adel A. Marzouk ◽  
Kuldip Singh ◽  
Mustafa R. Albayati
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Imidazole Ring ◽  
Dihedral Angles ◽  
Stacking Interactions ◽  
Compound C ◽  
Dimensional Network ◽  
Centroid Distance ◽  
Phenyl Rings

The central imidazole ring in the title compound, C28H30N2O2, makes dihedral angles of 28.42 (13), 71.22 (15) and 29.50 (14)°, respectively, with the phenyl rings in the 4- and 5-positions and the 3,4-dimethoxyphenyl group. In the crystal, molecules are linked by C—H...O and C—H...N hydrogen bonds, weak π–π stacking interactions [centroid–centroid distance = 3.760 (2) Å] and C—H...π contacts, forming a three-dimensional network.

scholarly journals (E)-4-[7-(2,3-Dihydrothieno[3,4-b][1,4]dioxin-5-yl)-2,1,3-benzothiadiazol-4-yl]-2-[(neopentylimino)methyl]phenol

2014 ◽  
Vol 70 (8) ◽  
pp. o848-o849
Author(s):  
Lauren A. Mitchell ◽  
Jordan A. Dinser ◽  
Bradley J. Holliday
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Ring System ◽  
Dihedral Angles ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Π Stacking ◽  
Dimensional Network ◽  
Centroid Distance ◽  
Title Molecule

In the title molecule, C24H23N3O3S2, the benzothiadiazole ring system is essentially planar, with an r.m.s. deviation of 0.020 (8) Å. The thiophene and hydroxy-substitiuted rings form dihedral angles of 23.43 (9) and 35.45 (9)°, respectively, with the benzothiadiazole ring system. An intramolecular O—H...N hydrogen bond is observed. In the crystal, weak C—H...O hydrogen bonds and π–π stacking interactions [centroid–centroid distance = 3.880 (3) Å] link molecules into chains along [100]. In addition, there are short S...S contacts [3.532 (3) Å] which link these chains, forming a two-dimensional network parallel to (010).

scholarly journals Crystal structure of (E)-2-[(2-hydroxy-4-methoxyphenyl)(phenyl)methylidene]-N-phenylhydrazine-1-carboxamide

2015 ◽  
Vol 71 (4) ◽  
pp. 427-430 ◽  
Author(s):  
C. F. Annie ◽  
M. Sithambaresan ◽  
M. R. Prathapachandra Kurup
Keyword(s):  
Hydrogen Bonds ◽  
Phenyl Ring ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Aromatic Rings ◽  
Phenolic Ring ◽  
Compound C ◽  
Centroid Distance ◽  
Benzene Rings ◽  
Phenyl Rings

The title compound, C21H19N3O3, has anEconformation about the azomethine double bond. The central moiety of the hydrazinecarboxamide moiety [–N—N—C(=O)—N–] has an almost coplanar arrangement [maximum deviation for the C atom = 0.010 (2) Å]. This central moiety is flanked by three aromatic rings and its mean plane makes dihedral angles of 24.7 (1), 72.91 (12) and 34.26 (11) Å, respectively, with the phenolic ring, the phenyl ring attached to the same C atom as the phenolic ring, and the phenylhydrazine ring. The adjacent phenolic and phenyl rings are twisted away from each other to reduce steric hindrance and make a dihedral angle of 80.59 (12)°. The phenolic and phenylhydrazine rings are inclined to one another by 28.89 (11)°. The rigidity of the molecule is increased by an intramolecular O—H...N hydrogen bond involving the phenolic hydrogen and the azomethine N atom. In the crystal, the carbonyl O atom forms bifurcated hydrogen bonds with the two NH atoms of the hydrazinic group, leading to the formation of chains propagating along [001]. Within the chains there are also C—H...O hydrogen bonds present. The chains are linkedviaC=O...π [3.4316 (18) Å] and parallel slipped π–π interactions, involving inversion-related benzene rings [centroid–centroid distance = 3.8850 (14) Å; inter-planar distance = 3.3895 (10) Å; slippage = 1.899 Å], forming sheets lying parallel to (100).

scholarly journals N-(6-Chloro-1-methyl-1H-imidazo[4,5-c]pyridin-4-yl)benzenesulfonamide

2014 ◽  
Vol 70 (4) ◽  
pp. o445-o445
Author(s):  
Venkatesh B. Devaru ◽  
K. S. Katagi ◽  
O. Kotresh ◽  
H. K. Arunkashi ◽  
H. C. Devarajegowda
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Phenyl Ring ◽  
Three Dimensional ◽  
Dihedral Angles ◽  
Stacking Interactions ◽  
Asymmetric Unit ◽  
Compound C ◽  
Dimensional Network ◽  
Centroid Distance

The asymmetric unit of the title compound, C13H11ClN4O2S, contains two molecules (AandB), in which the dihedral angles between the 1H-imidazo[4,5-c]pyridine system and terminal phenyl ring are 80.83 (10) and 62.34 (1)°. In the crystal,A–Bdimers are linked by pairs of N—H...N hydrogen bonds, which generateR22(10) loops. The dimers are linked by C—H...O and C—H...Cl interactions, generating a three-dimensional network. Aromatic π–π stacking interactions [shortest centroid–centroid distance = 3.5211 (12) Å] are also observed.

scholarly journals Ethyl (4-{[(diethylcarbamothioyl)sulfanyl]methyl}-2-oxo-2H-chromen-7-yl)carbamate

2014 ◽  
Vol 70 (2) ◽  
pp. o219-o220
Author(s):  
K. R. Roopashree ◽  
K. Mahesh Kumar ◽  
B. R. Anitha ◽  
A. J. Ravi ◽  
H. C. Devarajegowda
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Molecular Conformation ◽  
Ring System ◽  
Two Dimensional ◽  
Aromatic Rings ◽  
Compound C ◽  
Centroid Distance ◽  
Ring Motif ◽  
Chromene Ring

In the title compound, C18H22N2O4S2, the 2H-chromene ring system is essentially planar (r.m.s. deviation = 0.012 Å). The molecular conformation is stabilized by a C—H...O hydrogen bond. In the crystal, N—H...S and C—H...O hydrogen bonds occur, the former enclosing anR22(22) ring motif, and lead to the formation of a two-dimensional slab-like network lying parallel to (10-1). π–π interactions are observed between inversion-related aromatic rings [shortest centroid–centroid distance = 3.6300 (11) Å].

scholarly journals Crystal structure of 6-bromo-7-fluoro-4-oxo-4H-chromene-3-carbaldehyde

2015 ◽  
Vol 71 (7) ◽  
pp. 857-860 ◽  
Author(s):  
Yoshinobu Ishikawa
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Least Squares ◽  
Title Compound ◽  
Weak Interactions ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Compound C ◽  
Dimensional Network ◽  
Centroid Distance

In the title compound, C10H4BrFO3, a brominated and fluorinated 3-formylchromone derivative, all atoms are essentially coplanar (r.m.s. deviation of 0.025 Å for the non-H atoms), with the largest deviation from the least-squares plane [0.050 (6) Å] being for a benzene-ring C atom. In the crystal, molecules are linked through stacking interactions [centroid–centroid distance between the benzene and pyran rings = 3.912 (4) Å], C—H...O hydrogen bonds and short C...O contacts [2.865 (7) Å]. Unsymmetrical halogen...halogen interactions between the bromine and fluorine atoms [Br...F = 3.116 (4) Å, C—Br...F = 151.8 (2), C—F...Br = 154.1 (4)°] are also formed, giving a meandering two-dimensional network propagating in the (041) plane. A comparison with related structures is made and the various types of weak interactions are ranked in importance.

scholarly journals Ethyl 3-[7-ethoxy-6-(4-methoxybenzenesulfonamido)-2H-indazol-2-yl]propanoate

2012 ◽  
Vol 68 (4) ◽  
pp. o931-o931 ◽  
Author(s):  
Najat Abbassi ◽  
Bassou Oulemda ◽  
El Mostapha Rakib ◽  
Detlef Geffken ◽  
Hafid Zouihri
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Two Dimensional ◽  
Π Interactions ◽  
Compound C ◽  
Dimensional Network ◽  
Centroid Distance

In the title compound, C21H25N3O6S, the dihedral angle between the methoxybenzene and indazole rings is 74.96 (5)°. The crystal packing is stabilized by an N—H...O hydrogen bond into a two-dimensional network. In addition, C—H...π interactions and a π–π contact, with a centroid–centroid distance of 3.5333 (6) Å, are observed. The crystal packing is stabilized by N—H...O and C—H...O hydrogen bonds.

scholarly journals Crystal structure of phenylN-(3,5-dimethylphenyl)carbamate

2017 ◽  
Vol 73 (6) ◽  
pp. 849-852
Author(s):  
Y. AaminaNaaz ◽  
Subramaniyan Sathiyaraj ◽  
Sundararaj Kalaimani ◽  
A. Sultan Nasar ◽  
A. SubbiahPandi
Keyword(s):  
Three Dimensional ◽  
Dihedral Angles ◽  
Stacking Interactions ◽  
Asymmetric Unit ◽  
Compound C ◽  
Dimensional Network ◽  
Centroid Distance ◽  
Phenyl Rings ◽  
Carbamate Group ◽  
Independent Molecules

The asymmetric unit of the title compound, C15H15NO2, contains two independent molecules (AandB). The dimethylphenyl ring, the phenyl ring and the central carbamate N—C(=O)—O group are not coplanar. In moleculeA, the dimethylphenyl and phenyl rings are inclined to the carbamate group mean plane by 27.71 (13) and 71.70 (4)°, respectively, and to one another by 84.53 (13)°. The corresponding dihedral angles in moleculeBare 34.33 (11), 66.32 (13) and 85.48 (12)°, respectively. In the crystal, theAandBmolecules are arranged alternately linked throughN—H...O(carbonyl) hydrogen bonds, forming –A–B–A–B– chains, which extend along [100]. Within the chains and linking neighbouring chains there are C—H...π interactions present, forming columns along thea-axis direction. The columns are linked by offset π–π stacking interactions, forming a three-dimensional network [shortest centroid–centroid distance = 3.606 (1) Å].

scholarly journals 6,6′-Dimethoxy-2,2′-[(E,E′)-(2,4,6-trimethyl-1,3-phenylene)bis(nitrilomethanylylidene)]diphenol chloroform monosolvate

2012 ◽  
Vol 68 (4) ◽  
pp. o1176-o1176
Author(s):  
Hadariah Bahron ◽  
Najihah Abu Bakar ◽  
Bohari M. Yamin ◽  
M. Sukeri M. Yusof
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Molecular Conformation ◽  
Crystal Packing ◽  
Solvent Molecule ◽  
Dihedral Angles ◽  
Stacking Interactions ◽  
Aromatic Rings ◽  
Compound C ◽  
Benzene Rings

In the title compound, C25H26N2O4·CHCl3, the aromatic rings of the iminomethyl-6-methoxyphenol fragments make dihedral angles of 58.33 (6) and 87.74 (6)° with the central benzene ring. The molecular conformation is stabilized by intramolecular O—H...N hydrogen bonds. In the crystal, an intermolecular C—H...O hydrogen bond involving the chloroform solvent molecule is observed. The crystal packing is further stabilized by π–π stacking interactions [centroid–centroid distances = 3.739 (3)–3.776 (3) Å] between the benzene rings of centrosymmetrically related molecules.

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