scholarly journals N′-(3-Hydroxybenzylidene)-4-methylbenzohydrazide

2012 ◽  
Vol 68 (6) ◽  
pp. o1816-o1816
Author(s):  
Ji-Lai Liu ◽  
Ming-Hui Sun ◽  
Jing-Jun Ma
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Aromatic Rings ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Benzene Rings

The title compound, C15H14N2O2, was obtained from the reaction of 3-hydroxybenzaldhyde and 4-methylbenzohydrazide in methanol. In the molecule, the benzene rings form a dihedral angle of 2.9 (3)°. In the crystal, N—H...O and O—H...O hydrogen bonds link the molecules into layers parallel to (101). The crystal packing also exhibits π–π interactions between the aromatic rings [centroid–centroid distance = 3.686 (4) Å].

scholarly journals N-(2-Formylphenyl)-4-toluenesulfonamide: a second monoclinic polymorph

2012 ◽  
Vol 68 (4) ◽  
pp. o1009-o1010 ◽  
Author(s):  
S. Murugavel ◽  
N. Manikandan ◽  
D. Kannan ◽  
M. Bakthadoss
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Aromatic Rings ◽  
Acta Cryst ◽  
Space Group ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance

The title compound, C14H13NO3S, (I), is a second monoclinic polymorph. The original polymorph, (II), was reported by Mahíaet al.[Acta Cryst.(1999), C55, 2158–2160]. Polymorph (II) crystalllized in the space groupP21/c(Z= 4), whereas the title polymorph (I) occurs in the space groupP21/n(Z= 4). The dihedral angle between the two aromatic rings is 75.9 (1)° in (I) compared to 81.9 (1)° for (II). In both polymorphs, twoS(6) rings are generated by intramolecular N—H...O and C—H...O hydrogen bonds, resulting in similar molecular geometries. However, the two polymorphs differ concerning their crystal packing. In (I), molecules are linked intoC(8) zigzag chains along thebaxis by C—H...O hydrogen bonds, whereas in (II) molecules are linked by C—H...O hydrogen bonds, formingC(7) chains along thebaxis. The title polymorph is further stabilized by intermolecular C—H...π and π–π interactions [centroid–centroid distance = 3.814 (1) Å]. These interactions are not evident in polymorph (II).

scholarly journals 2-(2-Methyl-5-nitro-1H-imidazol-1-yl)ethyl 2-bromobenzoate

2012 ◽  
Vol 68 (4) ◽  
pp. o1218-o1218 ◽  
Author(s):  
Aurang Zeb ◽  
Sammer Yousuf ◽  
Fatima Z. Basha
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance

In the title compound, C13H12BrN3O4, the dihedral angle between the benzene and imidazole rings is 30.6 (2)°. In the crystal, molecules are linked into chains parallel to [001] by C—H...O hydrogen bonds. The crystal packing is further consolidated by π–π interactions [centroid–centroid distance = 3.482 (2) Å].

scholarly journals 9-[3-(Dimethylamino)propyl]-10,10-dimethyl-9,10-dihydroanthracen-9-ol

2013 ◽  
Vol 69 (2) ◽  
pp. o175-o175
Author(s):  
Manpreet Kaur ◽  
Ray J. Butcher ◽  
Mehmet Akkurt ◽  
H. S. Yathirajan ◽  
B. Nagaraj
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Boat Conformation ◽  
Asymmetric Unit ◽  
Aromatic Rings ◽  
Central Ring ◽  
Π Interactions ◽  
Compound C ◽  
Benzene Rings

The asymmetric unit of the title compound, C21H27NO, contains two molecules (AandB). In moleculeA, the central ring of the anthrone unit adopts a shallow boat conformation and the dihedral angle between the benzene rings is 18.96 (7)°. In moleculeB, the central ring is close to being planar (r.m.s. deviation = 0.078 Å) and the dihedral angle between the aromatic rings is 7.82 (7)°. In the crystal, molecules are linked by O—H...N hydrogen bonds, forming zigzagC(7) chains of alternatingAandBmolecules running parallel to [100]. The structure also features weak C—H...O and C—H...π interactions.

scholarly journals 1-(4-Bromophenylsulfinyl)-2-methylnaphtho[2,1-b]furan

2012 ◽  
Vol 68 (4) ◽  
pp. o1246-o1246
Author(s):  
Hong Dae Choi ◽  
Pil Ja Seo ◽  
Uk Lee
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Interplanar Distance ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Benzene Rings ◽  
The Mean

In the title compound, C19H13BrO2S, the 4-bromophenyl ring makes a dihedral angle of 83.75 (4)° with the mean plane of the naphthofuran fragment [r.m.s. deviation = 0.024 (2) Å]. In the crystal, molecules are linkedviapairs of C—H...O hydrogen bonds, forming inversion dimers. These dimers are connected by weak π–π interactions between the central naphthofuran benzene rings of neighbouring molecules [centroid–centroid distance = 3.483 (2) Å, interplanar distance = 3.416 (2) Å and slippage = 0.680 (2) Å].

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 2-(2-Chloro-8-methylquinolin-3-yl)-4-phenyl-1,2-dihydroquinazoline

2013 ◽  
Vol 69 (11) ◽  
pp. o1719-o1720
Author(s):  
Chamseddine Derabli ◽  
Raouf Boulcina ◽  
Sofiane Bouacida ◽  
Hocine Merazig ◽  
Abdelmadjid Debache
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Phenyl Ring ◽  
Crystal Packing ◽  
Dihedral Angles ◽  
Compound C ◽  
Centroid Distance ◽  
Benzene Rings ◽  
Phenyl Rings

In the title compound, C24H18ClN3, the dihydroquinazoline and methyl-substituted quinoline benzene rings make a dihedral angle of 78.18 (4)° and form dihedral angles of 45.91 (5) and 79.80 (4)°, respectively, with the phenyl ring. The dihedral angle between the phenyl ring of dihydroquinazoline and the methyl-substituted benzene ring of quinoline is 78.18 (4)°. The crystal packing can be described as crossed layers parallel to the (011) and (0-11) planes. The structure features N—H...N hydrogen bonds and π–π interactions [centroid–centroid distance between phenyl rings = 3.7301 (9) Å].

scholarly journals 5-Fluoro-2-(2-fluorophenyl)-3-methylsulfinyl-1-benzofuran

2014 ◽  
Vol 70 (7) ◽  
pp. o829-o829
Author(s):  
Hong Dae Choi ◽  
Pil Ja Seo ◽  
Uk Lee
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Three Dimensional ◽  
Ring System ◽  
Π Interactions ◽  
Compound C ◽  
Dimensional Network ◽  
Centroid Distance ◽  
Benzene Rings

In the title compound, C15H10F2O2S, the dihedral angle between the plane of the benzofuran ring system (r.m.s. deviation = 0.015 Å) and that of the 2-fluorophenyl ring is 28.53 (6)°. In the crystal, molecules are linked by C—H...O and C—H...F hydrogen bonds, and by π–π interactions between the furan and benzene rings of neighbouring molecules [centroid–centroid distance = 3.625 (2) Å], forming a three-dimensional network.

scholarly journals 5-Fluoro-2-methyl-3-(3-methylphenylsulfonyl)-1-benzofuran

2014 ◽  
Vol 70 (4) ◽  
pp. o482-o482
Author(s):  
Hong Dae Choi ◽  
Pil Ja Seo ◽  
Uk Lee
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Axis Direction ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Benzene Rings ◽  
The Mean

In the title compound, C16H13FO3S, the dihedral angle between the mean planes of the benzofuran ring system and the 3-methylphenyl ring is 80.96 (4)°. In the crystal, molecules are linkedviapairs of π–π interactions between furan and benzene rings, with centroid–centroid distances of 3.758 (1) and 3.771 (1) Å. A similar interaction is found between furan rings, with a centroid–centroid distance of 3.661 (1) Å between neighbouring molecules. The molecules stack along thea-axis direction. In addition, C—H...O and C—H...π hydrogen bonds are observed between inversion-related dimers.

scholarly journals Crystal structure of (E)-N′-benzylidene-1-methyl-4-nitro-1H-pyrrole-2-carbohydrazide

2014 ◽  
Vol 70 (9) ◽  
pp. o995-o995
Author(s):  
Zhijun Wang ◽  
Chengyong Zhou ◽  
Lei Yan ◽  
Jinglin Wang
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Benzene Rings

In the title compound, C13H12N4O3, the dihedral angle between the planes of the pyrrole and benzene rings is 7.47 (1)°. In the crystal, molecules are arranged in sheets lying parallel to (101). Neighbouring sheets are linked by N—H...O hydrogen bonds, weak π–π [centroid–centroid distance between the pyrrole rings = 3.765 (11) Å] and C—H...π interactions, forming a three-dimensional structure.

scholarly journals Crystal structure of 5-chloro-2,7-dimethyl-3-[(4-methylphenyl)sulfonyl]-1-benzofuran

2014 ◽  
Vol 70 (9) ◽  
pp. o1018-o1019 ◽  
Author(s):  
Hong Dae Choi ◽  
Uk Lee
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Axis Direction ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Benzene Rings

In the title compound, C17H15ClO3S, the dihedral angle between the planes of the benzofuran ring system [r.m.s. deviation = 0.008 Å] and the 4-methylphenyl ring is 77.29 (4)°. In the crystal, molecules are linked by π–π interactions between the benzene rings of neighbouring molecules [centroid–centroid distance = 3.847 (2) Å] and between the benzene and furan rings of neighbouring molecules [centroid–centroid distance = 3.743 (2) Å]. The molecules are stacked along thea-axis direction. In addition, pairs of C—H...O hydrogen bonds are observed between inversion-related dimers: these generateR22(12) loops.

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