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 (E)-2-[(Pyren-1-ylimino)methyl]quinolin-8-ol

IUCrData ◽  
2016 ◽  
Vol 1 (4) ◽  
Author(s):  
Soma Mukherjee ◽  
Shrabani Talukder ◽  
Helen Stoeckli-Evans
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Ring System ◽  
Quinoline Ring ◽  
Aromatic Rings ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Ring Motif

In the title compound, C26H16N2O, the pyrene ring system (r.m.s. deviation = 0.021 Å) is inclined to the planar quinoline ring system (r.m.s. deviation = 0.017 Å) by 30.62 (5)°, and the conformation about the bridging N=C bond isE. There is an intramolecular O—H...N hydrogen bond with anS(5) ring motif present. In the crystal, molecules are linked by pairs of C—H...O hydrogen bonds, forming inversion dimers with anR22(14) ring motif, flanked by twoR21(7) ring motifs. The dimers stack along thebaxis with slipped parallel π–π interactions involving neighbouring molecules; the shortest π–π interaction involves aromatic rings of the quinoline ring system [inter-centroid distance = 3.6267 (11) Å].

scholarly journals (2Z)-2-{[N-(2-Formylphenyl)-4-methylbenzenesulfonamido]methyl}-3-(4-methylphenyl)prop-2-enenitrile

2012 ◽  
Vol 68 (4) ◽  
pp. o1084-o1084
Author(s):  
D. Kannan ◽  
M. Bakthadoss ◽  
R. Madhanraj ◽  
S. Murugavel
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Molecular Conformation ◽  
Crystal Packing ◽  
Dihedral Angles ◽  
Compound C ◽  
Centroid Distance ◽  
Ring Motif

In the title compound, C25H22N2O3S, the sulfonyl-bound benzene ring forms dihedral angles of 36.8 (2) and 81.4 (2)°, respectively, with the formylbenzene and methylbenzene rings. The molecular conformation is stabilized by an intramolecular C—H...O hydrogen bond, which generates anS(5) ring motif. The crystal packing is stabilized by C—H...O hydrogen bonds, which generateC(11) chains along thebaxis. The crystal packing is further stabilized by π–π interactions [centroid–centroid distance = 3.927 (2) Å].

scholarly journals (5,7-Dimethyl-2-oxo-2H-chromen-4-yl)methyl pyrrolidine-1-carbodithioate

2012 ◽  
Vol 68 (6) ◽  
pp. o1584-o1584
Author(s):  
N. M. Mahabaleshwaraiah ◽  
K. Mahesh Kumar ◽  
O. Kotresh ◽  
Waleed Fadl Ali Al-eryani ◽  
H. C. Devarajegowda
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Ring System ◽  
Maximum Deviation ◽  
Pyrrolidine Ring ◽  
Compound C ◽  
Centroid Distance ◽  
Planar Part ◽  
Chromene Ring

In the title compound, C17H19NO2S2, the 2H-chromene ring system is almost planar, with a maximum deviation of 0.044 (2) Å, and the pyrrolidine ring adopts an envelope conformation. The dihedral angle between the 2H-chromene system and the planar part of the pyrrolidine ring is 83.65 (8)°. A weak intramolecular C—H...S hydrogen bond occurs. The crystal structure features C—H...O hydrogen bonds and π–π interactions, with a centroid–centroid distance of 3.5728 (16) Å.

scholarly journals 2-((E)-{[4-(Hydroxymethyl)phenyl]imino}methyl)phenol

2012 ◽  
Vol 68 (6) ◽  
pp. o1618-o1618 ◽  
Author(s):  
Shaaban K. Mohamed ◽  
Antar A. Abdelhamid ◽  
Mehmet Akkurt ◽  
Phillip E. Fanwick ◽  
A. M. Maharramov
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Tautomeric Form ◽  
Crystal Packing ◽  
Two Dimensional ◽  
Aromatic Rings ◽  
Compound C ◽  
Ring Motif

The title compound, C14H13NO2, adopts the enol–imine tautomeric form, with an intramolecular O—H...N hydrogen bond which generates an S(6) ring motif. The dihedral angle between the aromatic rings is 7.85 (7)°. The crystal structure is stabilized by O—H...O, O—H...N and C—H...O hydrogen bonds, forming a two-dimensional array that stacks along the a axis. In addition, a C—H...π interaction contributes to the stabilization of the crystal packing.

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 (E)-Methyl 3-(3,4-dimethoxyphenyl)-2-[(1,3-dioxoisoindolin-2-yl)methyl]acrylate

2012 ◽  
Vol 68 (4) ◽  
pp. o1107-o1107
Author(s):  
D. Kannan ◽  
M. Bakthadoss ◽  
D. Lakshmanan ◽  
S. Murugavel
Keyword(s):  
Hydrogen Bond ◽  
Benzene Ring ◽  
Molecular Conformation ◽  
Crystal Packing ◽  
Ring System ◽  
Maximum Deviation ◽  
Compound C ◽  
Centroid Distance ◽  
Methoxy Groups ◽  
Ring Motif

In the title compound, C21H19NO6, the isoindole ring system is essentially planar [maximum deviation = 0.019 (2) Å for the N atom] and is oriented at a dihedral angle of 51.3 (1)° with respect to the benzene ring. The two methoxy groups are almost coplanar with the attached benzene ring [C—O—C—C = 3.7 (4) and 4.3 (4)°]. The molecular conformation is stabilized by an intramolecular C—H...O hydrogen bond, which generates anS(9) ring motif. In the crystal, molecules are linked through bifurcated C—H...(O,O) hydrogen bonds havingR12(5) ring motifs, forming chains along theb-axis direction. The crystal packing is further stabilzed by π–π interactions [centriod–centroid distance = 3.463 (1) Å].

scholarly journals N-(4-Chlorophenyl)-N′-{4-[(Z)-hydroxy(1-oxo-1,3-dihydro-2H-inden-2-ylidene)methyl]phenyl}urea

IUCrData ◽  
2018 ◽  
Vol 3 (6) ◽  
Author(s):  
Ísmail Çelik ◽  
Zeliha Atioğlu ◽  
Gamze Ordu ◽  
Hayreddin Gezegen ◽  
Mehmet Akkurt
Keyword(s):  
Hydrogen Bond ◽  
Molecular Conformation ◽  
Ring System ◽  
Dihedral Angles ◽  
Bond Forming ◽  
Compound C ◽  
Centroid Distance ◽  
Benzene Rings ◽  
Ring Motif ◽  
Methyl Phenyl

In the title compound, C23H17ClN2O3, the 2,3-dihydro-1H-indene ring system (r.m.s deviation = 0.004 Å) subtends dihedral angles of 81.12 (16) and 7.56 (14)° with the chlorophenyl and benzene rings, respectively. The molecular conformation features an intramolecular O—H...O hydrogen bond, forming an S(6) ring motif. In the crystal, molecules are linked by N—H...O hydrogen bonds generating [100] chains featuring R 1 2(6) loops. Weak aromatic π–π stacking [centroid–centroid distance = 3.656 (2) Å] is also oberved.

scholarly journals 1-(6-Chloro-1-methyl-1H-imidazo[4,5-c]pyridin-4-yl)-3-(2-chlorophenyl)urea

2014 ◽  
Vol 70 (2) ◽  
pp. o155-o156
Author(s):  
Venkatesh B. Devaru ◽  
M. Vinduvahini ◽  
M. Madaiah ◽  
H. D. Revanasiddappa ◽  
H. C. Devarajegowda
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Phenyl Ring ◽  
Pyridine Ring ◽  
Molecular Conformation ◽  
Ring System ◽  
Compound C ◽  
Centroid Distance

In the title compound, C14H11Cl2N5O, the plane of the 1H-imidazo[4,5-c]pyridine ring system [r.m.s. deviation = 0.087 (19) Å] makes a dihedral angle of 4.87 (10)° with the terminal phenyl ring. An intramolecular N—H...N hydrogen bond stabilizes the molecular conformation. In the crystal, N—H...O hydrogen bonds link the molecules into inversion dimers. These dimers are connected by π–π interactions between imidazole rings [shortest centroid–centroid distance = 3.4443 (14) Å].

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 7,7′-[(pyridin-2-yl)methylene]bis(5-chloroquinolin-8-ol)

2020 ◽  
Vol 76 (8) ◽  
pp. 1271-1274
Author(s):  
Yukiyasu Kashiwagi ◽  
Koji Kubono ◽  
Toshiyuki Tamai
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Ring System ◽  
The Other ◽  
Two Dimensional ◽  
Quinoline Ring ◽  
Compound C ◽  
Dimensional Network ◽  
Ring Motif

In the title compound, C24H15Cl2N3O2, one quinoline ring system is essentially planar and the other is slightly bent. An intramolecular O—H...N hydrogen bond involving the hydroxy group and a pyridine N atom forms an S(5) ring motif. In the crystal, two molecules are associated into an inversion dimer with two R 2 2(7) ring motifs through intermolecular O—H...N and O—H...O hydrogen bonds. The dimers are further linked by an intermolecular C—H...O hydrogen bond and four C—H...π interactions, forming a two-dimensional network parallel to (001).

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