scholarly journals Crystal structure of dimethyl 3,3′-[(4-chlorophenyl)methylene]bis(1H-indole-2-carboxylate)

2014 ◽  
Vol 70 (10) ◽  
pp. 259-261 ◽  
Author(s):  
Yu-long Li ◽  
Hong-shun Sun ◽  
Hong Jiang ◽  
Ning Xu ◽  
Hong Xu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Indole Ring ◽  
Ring Systems ◽  
Bond Forming ◽  
Compound C ◽  
The Mean ◽  
Ring Motif

In the title compound, C27H21ClN2O4, the mean planes of the two indole ring systems (r.m.s. deviations = 0.021 and 0.024 Å) are approximately perpendicular to one another, with a dihedral angle of 79.54 (12)°. The benzene ring is twisted with respect to the mean planes of the two indole ring systems at angles of 80.14 (15) and 86.30 (15)°. In the crystal, molecules are linked by N—H...O hydrogen bonds, forming inversion dimers with anR22(18) ring motif. The dimers are linked by a further N—H...O hydrogen bond, forming chains along [100]. There are intra- and intermolecular C—H...π interactions present, the latter linking the chains to form a three-dimensional supramolecular structure.

scholarly journals Crystal structure of 1-benzyl-4-formyl-1H-pyrrole-3-carboxamide

2016 ◽  
Vol 72 (2) ◽  
pp. 133-135
Author(s):  
Qi-Di Zhong ◽  
Sheng-Quan Hu ◽  
Hong Yan
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Π Interactions ◽  
Bond Forming ◽  
Compound C ◽  
The Mean ◽  
Ring Motif

In the title compound, C13H12N2O2(I), the mean planes of the pyrrole and benzyl rings are approximately perpendicular, forming a dihedral angle of 87.07 (4) °. There is an intramolecular N—H...O hydrogen bond forming an S(7) ring motif. In the crystal, molecules are linkedviaa pair of N—H...O hydrogen bonds forming inversion dimers. C—H...O hydrogen bonds link the dimers into chains along direction [10-1]. The chains are further linked by weak C—H...π interactions forming layers parallel to theacplane.

scholarly journals Crystal structure of 4-bromo-2-(1H-imidazo[4,5-b]pyridin-2-yl)phenol

2015 ◽  
Vol 71 (12) ◽  
pp. o991-o992
Author(s):  
Kamel Ouari
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Bond Forming ◽  
Pyridine Moiety ◽  
Compound C ◽  
Centroid Distance ◽  
Ring Motif

In the title compound, C12H8BrN3O, the 4-bromophenol ring is coplanar with the planar imidazo[4,5-b]pyridine moiety (r.m.s deviation = 0.015 Å), making a dihedral angle of 1.8 (2)°. There is an intramolecular O—H...N hydrogen bond forming anS(6) ring motif. In the crystal, molecules are linkedviaN—H...N and O—H...Br hydrogen bonds, forming undulating sheets parallel to (10-2). The sheets are linked by π–π interactions [inter-centroid distance = 3.7680 (17) Å], involving inversion-related molecules, forming a three-dimensional structure.

scholarly journals Crystal structure of (Z)-3-benzyloxy-6-[(2-hydroxyanilino)methylidene]cyclohexa-2,4-dien-1-one

2014 ◽  
Vol 70 (12) ◽  
pp. o1292-o1292 ◽  
Author(s):  
Nadir Ghichi ◽  
Ali Benboudiaf ◽  
Hocine Merazig
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Maximum Deviation ◽  
Amino Group ◽  
Supramolecular Architecture ◽  
Bond Forming ◽  
Compound C ◽  
Ring Motif

In the title compound, C20H17NO3, the methylidenecyclohexa-2,4-dienone moiety is approximately planar [maximum deviation = 0.0615 (10) Å] and is oriented at diherdral angles of 69.60 (7) and 1.69 (9)° to the phenyl and hydroxybenzene rings, respectively. The amino group links with the carbonyl O atomviaan intramolecular N—H...O hydrogen bond, forming anS(6) ring motif. In the crystal, the molecules are linked by O—H...O hydrogen bonds and weak C—H...O and C—H...π interactions, forming a three-dimensional supramolecular architecture.

scholarly journals Crystal structure of (5-chloro-2-hydroxyphenyl)(3-methylisoxazolo[5,4-b]pyridin-5-yl)methanone

2015 ◽  
Vol 71 (11) ◽  
pp. o875-o876
Author(s):  
Rajamani Raja ◽  
Nataraj Poomathi ◽  
Paramasivam T. Perumal ◽  
A. SubbiahPandi
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Ring System ◽  
Bond Forming ◽  
Compound C ◽  
Centroid Distance ◽  
Benzene Rings ◽  
The Mean ◽  
Ring Motif

In the title compound, C14H9ClN2O3, the fused pyridine and isoxazole rings are approximately planar, making a dihedral angle of 1.14 (16)°. The molecule is twisted with the benzene ring and the mean plane through the fused pyridine-isoxazole ring system being inclined to one another by 47.03 (13)°. There is an intramolecular O—H...O hydrogen bond forming anS(6) ring motif. In the crystal, molecules are linked by C—H...N hydrogen bonds, forming chains propagating along [001]. The chains are linked by slipped parallel π–π interactions, involving inversion-related benzene rings, forming slabs lying parallel to thebcplane {inter-centroid distance = 3.770 (2) Å].

scholarly journals Crystal structure of dimethyl 3,3′-[(3-nitrophenyl)methylene]bis(1H-indole-2-carboxylate) ethanol monosolvate

2014 ◽  
Vol 70 (11) ◽  
pp. 370-372 ◽  
Author(s):  
Hong-Shun Sun ◽  
Yu-Long Li ◽  
Hong Jiang ◽  
Ning Xu ◽  
Hong Xu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Supramolecular Architecture ◽  
Indole Ring ◽  
Framework Structure ◽  
Ring Systems ◽  
Ethanol Molecule ◽  
Compound C

In the title compound, C27H21N3O6·C2H5OH, the indole ring systems are approximately perpendicular to each other, with a dihedral angle of 89.3 (5)°; the plane of the benzene ring is oriented with respect to the indole ring systems at 49.9 (5) and 73.4 (3)°. In the crystal, molecules are linked by N—H...O and O—H...O hydrogen bonds and weak C—H...π interactions into a three-dimensional supramolecular architecture. A void of 33.0 (7) Å3is observed in the crystal structure. The solvent ethanol molecule acts as a donor, forming an O—H...O hydrogen bond, reinforcing the framework structure.

scholarly journals Crystal structure of methyl (E)-2-(1-methyl-2-oxoindolin-3-ylidene)acetate

2015 ◽  
Vol 71 (3) ◽  
pp. o188-o189 ◽  
Author(s):  
M. P. Savithri ◽  
P. S. Yuvaraj ◽  
B. S. R. Reddy ◽  
R. Raja ◽  
A. SubbiahPandi
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Ring System ◽  
Dimensional Structure ◽  
Side Chain ◽  
Indole Ring ◽  
Compound C ◽  
The Mean ◽  
Ring Motif

The title compound, C12H11NO3, is essentially planar, with the mean plane of the acetate side chain [–C—C(=O)—O—C] being inclined to the mean plane of the indole ring system by 12.49 (7)°. The five- and six-membered rings of the indole group are almost coplanar, making a dihedral angle of 1.76 (8)°. The conformation about the C=C bond isEand there is an intramolecular C—H...O hydrogen bond present. In the crystal, molecules are linked by pairs of C—H...O hydrogen bonds forming inversion dimers, with anR22(16) ring motif. The dimers are linked by a second pair of C—H...O hydrogen bonds, enclosingR22(16) ring motifs, forming ribbons lying parallel to (-114). The ribbons are linkedviaC—H...π interactions, forming a three-dimensional structure.

scholarly journals Crystal structure of dimethyl 3,3′-[(4-fluorophenyl)methylene]bis(1H-indole-2-carboxylate)

2015 ◽  
Vol 71 (10) ◽  
pp. 1140-1142 ◽  
Author(s):  
Hong-Shun Sun ◽  
Yu-long Li ◽  
Hong Jiang ◽  
Ning Xu ◽  
Hong Xu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Indole Ring ◽  
Ring Systems ◽  
Π Interactions ◽  
Compound C ◽  
The Mean ◽  
Supramolecular Chains

In the title compound, C27H21FN2O4, the mean planes of the indole ring systems (r.m.s. deviations = 0.0263 and 0.0160 Å) are approximately perpendicular to one another, making a dihedral angle of 84.0 (5)°; the fluorobenzene ring is twisted with respect to the mean planes of the two indole ring systems at 89.5 (5) and 84.6 (3)°. In the crystal, pairs of N—H...O hydrogen bonds link the molecules into inversion dimers, which are further linked by N—H...O hydrogen bonds into supramolecular chains propagated along theb-axis direction. Weak C—H...π interactions are observed between neighbouring chains.

scholarly journals Crystal structure of ethyl 2′′,3-dioxo-7′,7a'-dihydro-1′H,3H,3′H-dispiro[benzo[b]thiophene-2,6′-pyrrolo[1,2-c]thiazole-5′,3′′-indoline]-7′-carboxylate

2015 ◽  
Vol 71 (3) ◽  
pp. o148-o149
Author(s):  
M. P. Savithri ◽  
M. Suresh ◽  
R. Raghunathan ◽  
R. Raja ◽  
A. SubbiahPandi
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Ring System ◽  
Dimensional Structure ◽  
Thiazole Ring ◽  
Pyrrolidine Ring ◽  
Compound C ◽  
The Mean ◽  
Ring Motif

In the title compound, C23H20N2O4S2, the central pyrrolidine ring adopts an envelope conformation with the spiro C atom, shared with the benzothiophene ring system, as the flap. The thiazole ring has a twisted conformation on the S—C bond, where the C atom is that closest to methine C atom. The mean planes of the benzothiophene and indoline ring systems are inclined to the mean plane of the central pyrrolidine ring by 82.75 (8) and 80.03 (8)°, respectively, and to each other by 61.49 (6)°. In the crystal, molecules are linkedviapairs of N—H...O hydrogen bonds, forming inversion dimers with anR22(8) ring motif. The dimers are linkedviaC—H...O and C—H...N hydrogen bonds, forming a three-dimensional structure. The ethoxycarbonyl group is disordered over two orientations, with an occupancy ratio of 0.717 (12):0.283 (12).

scholarly journals Crystal structure of (E)-2-({[2-(1,3-dioxan-2-yl)phenyl]imino}methyl)phenol

2015 ◽  
Vol 71 (5) ◽  
pp. o357-o358
Author(s):  
Zhengyi Li ◽  
Song Shi ◽  
Kun Zhou ◽  
Liang Chen ◽  
Xiaoqiang Sun
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Condensation Reaction ◽  
Chair Conformation ◽  
Equatorial Position ◽  
Aromatic Rings ◽  
Bond Forming ◽  
Compound C ◽  
Ring Motif

The title compound, C17H17NO3, prepared by the condensation reaction of 2-(1,3-dioxan-2-yl)aniline and salicylaldehyde, has anEconformation about the C=N bond. The six-membered O-heterocycle adopts a chair conformation, with the bond to the aromatic ring located at its equatorial position. The dihedral angle between the aromatic rings is 36.54 (9)°. There is an intramolecular N—H...O hydrogen bond forming anS(6) ring motif. In the crystal, molecules are linked by C—H...O hydrogen bonds, forming chains along thea-axis direction. Within the chains, there are C—H...π interactions involving adjacent molecules.

scholarly journals Crystal structure of diethyl 3,3′-[(2-fluorophenyl)methylidene]bis(1H-indole-2-carboxylate)

2017 ◽  
Vol 73 (11) ◽  
pp. 1790-1792 ◽  
Author(s):  
Xin-Hua Lu ◽  
Hong-Shun Sun ◽  
Yuan Cai ◽  
Lu-Lu Chen ◽  
Yang-Feng Chen
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Indole Ring ◽  
Ring Systems ◽  
Compound C ◽  
The Mean ◽  
Supramolecular Chains ◽  
Centrosymmetric Dimers

In the title compound, C29H25FN2O4, the mean planes of the two indole ring systems (r.m.s. deviations = 0.1392 and 0.0115 Å) are approximately perpendicular to one another, subtending a dihedral angle of 86.0 (5)°; the benzene ring is twisted with respect to the mean planes of the two indole ring systems by 83.3 (2) and 88.1 (4)°, respectively. In the crystal, pairs of N—H...O hydrogen bonds link the molecules into centrosymmetric dimers, which are further linked by N—H...O hydrogen bonds into supramolecular chains propagating along the [101] direction.

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