scholarly journals 7-Methoxy-2-phenylquinoline-3-carbaldehyde

2014 ◽  
Vol 70 (2) ◽  
pp. o195-o196 ◽  
Author(s):  
Hasna Hayour ◽  
Abdelmalek Bouraiou ◽  
Sofiane Bouacida ◽  
Saida Benzerka ◽  
Ali Belfaitah
Keyword(s):  
Hydrogen Bonds ◽  
Phenyl Ring ◽  
Ring System ◽  
Quinoline Ring ◽  
Π Interactions ◽  
Centroid Distance ◽  
Title Molecule

In the title molecule, C17H13NO2, the phenyl ring is inclined to the quinoline ring system by 43.53 (4)°. In the crystal, molecules are linkedviaC—H...O hydrogen bonds, forming double-stranded chains propagating along [011]. These chains are linkedviaπ–π interactions involving inversion-related quinoline rings; the shortest centroid–centroid distance is 3.6596 (17) Å.

scholarly journals Methyl (1-benzamido-2-methoxy-2-oxoethyl)tryptophanate

IUCrData ◽  
2017 ◽  
Vol 2 (10) ◽  
Author(s):  
Oumaima Karai ◽  
Younas Aouine ◽  
Hassane Faraj ◽  
Anouar Alami ◽  
Abdelilah El Hallaoui ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Phenyl Ring ◽  
Three Dimensional ◽  
Ring System ◽  
Dimensional Structure ◽  
Indole Ring ◽  
Three Dimensional Structure ◽  
Π Interactions ◽  
Title Molecule

The title molecule, C22H23N3O2, is U-shaped, with a dihedral angle of 80.76 (9)° between the indole ring system and the phenyl ring. In the crystal, N—H...O hydrogen bonds combine with N—H...π and C—H...π interactions to generate a three-dimensional structure.

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].

2-Methylquinolin-8-yl 2-nitrobenzoate

2007 ◽  
Vol 63 (11) ◽  
pp. o4304-o4304 ◽  
Author(s):  
Gang Lei
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
Ester Group ◽  
Ring System ◽  
Quinoline Ring ◽  
Intermolecular Hydrogen Bonds ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance

In the title compound, C17H12N2O4, the quinoline ring system is essentially planar. The ester group is twisted away from the quinoline ring system and nitrobenzene ring by 84.83 (3) and 80.56 (4)°, respectively. The crystal packing is stabilized by C—H...O intermolecular hydrogen bonds, and π–π interactions between the quinoline ring systems of inversion-related molecules, with a centroid–centroid distance of 3.6346 (6) Å.

scholarly journals Crystal structure of (2S/2R,3S/3R)-3-hydroxy-2-phenylchroman-4-one

2015 ◽  
Vol 71 (2) ◽  
pp. o131-o132 ◽  
Author(s):  
Roumaissa Belguedj ◽  
Sofiane Bouacida ◽  
Hocine Merazig ◽  
Aissa Chibani ◽  
Abdelmalek Bouraiou
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Hydroxy Group ◽  
Phenyl Ring ◽  
Minor Component ◽  
Chair Conformation ◽  
Ring System ◽  
Dihedral Angles ◽  
Graph Set ◽  
Title Molecule

In the title molecule, C15H12O3, the C atoms bearing the hydroxy group and the phenyl ring are disordered over two sets of sites with refined occupancies of 0.573 (7) and 0.427 (7). There is also disorder of the phenyl ring but the hydroxy group was refined as ordered. The dihedral angles between the benzene ring of the chromane ring system and the phenyl ring are 89.7 (2)° for the major component of disorder and 72.1 (3)° for the minor component. Both disorder components of the the dihydropyran ring are in a half-chair conformation. In the crystal, molecules are linked by pairs of O—H...O hydrogen bonds, forming inversion dimers with anR22(10) graph-set motif. Weak C—H...π interactions link these dimers into ladders along [001].

scholarly journals Crystal structure of 4-azidomethyl-6-isopropyl-2H-chromen-2-one

2015 ◽  
Vol 71 (4) ◽  
pp. o227-o228 ◽  
Author(s):  
M. S. Krishnamurthy ◽  
Noor Shahina Begum ◽  
D. Shamala ◽  
K. Shivashankar
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Ring System ◽  
Maximum Deviation ◽  
Two Dimensional ◽  
Π Interactions ◽  
Dimensional Network ◽  
Title Molecule

In the title molecule, C13H13N3O2, the benzopyran ring system is essentially planar, with a maximum deviation of 0.017 (1) Å. In the crystal, weak C—H...O hydrogen bonds link molecules into ladders along [010]. In addition, π–π interactions between inversion-related molecules, with centroid–centroid distances in the range 3.679 (2)–3.876 (2) Å, complete a two-dimensional network parallel to (001).

scholarly journals 2-Bromo-1-(1-phenylsulfonyl-1H-indol-3-yl)propan-1-one

2014 ◽  
Vol 70 (3) ◽  
pp. o295-o296
Author(s):  
C. Ramathilagam ◽  
P. R. Umarani ◽  
V. Saravanan ◽  
A. K. Mohanakrishnan ◽  
B. Gunasekaran ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Phenyl Ring ◽  
Ring System ◽  
Indole Ring ◽  
Methyl Group ◽  
Π Interactions ◽  
Compound C ◽  
A Chain

In the title compound, C17H14BrNO3S, the phenyl ring makes a dihedral angle of 89.78 (16)° with the plane of the indole ring system. The terminal Br atom and the methyl group are disordered over two sets of sites, with site occupancies of 0.860 (2) and 0.140 (2). In the crystal, molecules are linked into a chain along theb-axis direction by weak C—H...O hydrogen bonds. The chains are further linked by C—H...π interactions, forming layers parallel to thebcplane.

scholarly journals 5-Chloro-3-(4-fluorophenylsulfonyl)-2,7-dimethyl-1-benzofuran

2014 ◽  
Vol 70 (9) ◽  
pp. o1065-o1066
Author(s):  
Hong Dae Choi ◽  
Uk Lee
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance

In the title compound, C16H12ClFO3S, the dihedral angle between the plane of the benzofuran ring system [r.m.s. deviation = 0.007 (1) Å] and that of the 4-fluorophenyl ring is 76.11 (5)°. In the crystal, molecules are linked into [010] chainsviatwo different inversion-generated pairs of C—H...O hydrogen bonds. The crystal structure also exhibits weak π–π interactions between the benzene and furan rings of neighbouring molecules [centroid–centroid distance = 3.820 (2) Å].

scholarly journals 2,3-Dimethylquinazolin-4(3H)-one

2014 ◽  
Vol 70 (7) ◽  
pp. o788-o788
Author(s):  
Fozil E. Saitkulov ◽  
Azamat A. Tashniyazov ◽  
Azimjon A. Mamadrahimov ◽  
Kh. M. Shakhidoyatov
Keyword(s):  
Hydrogen Bonds ◽  
Maximum Deviation ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Π Interactions ◽  
Π Stacking ◽  
Dimensional Network ◽  
Centroid Distance ◽  
Title Molecule

The non-H atoms of the title molecule, C10H10N2O, are essentially coplanar, with a maximum deviation of 0.046 (4) Å for the O atom. In the crystal, molecules are linked by weak C—H...O hydrogen bonds, forming chains along [010]. In addtion, weak C—H...π interactions and π–π stacking interactions between benzene and pyrimidine rings, with a centroid–centroid distance of 3.730 (3) Å, link the chains, forming a two-dimensional network parallel to (001).

scholarly journals 5-Bromo-1-methylindoline-2,3-dione

IUCrData ◽  
2016 ◽  
Vol 1 (5) ◽  
Author(s):  
Yassine Kharbach ◽  
Amal Haoudi ◽  
Frédéric Capet ◽  
Ahmed Mazzah ◽  
Lahcen El Ammari
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Ring System ◽  
Dimensional Structure ◽  
Three Dimensional Structure ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
The Mean

In the title compound, C9H6BrNO2, the indoline ring system, the two ketone O atoms and the Br atom are nearly coplanar, with the largest deviation from the mean plane being −0.1025 (4) Å. In the crystal, molecules are linked by two weak C—H...O hydrogen bonds and π–π interactions [inter-centroid distance = 3.510 (2) Å], forming a three-dimensional structure.

scholarly journals 6-Amino-3-methyl-1-phenyl-1H-pyrazolo[3,4-b]pyrazine-5-carboxamide

IUCrData ◽  
2016 ◽  
Vol 1 (11) ◽  
Author(s):  
Manpreet Kaur ◽  
Shaaban K. Mohamed ◽  
Mehmet Akkurt ◽  
Jerry P. Jasinski ◽  
Talaat I. El-Emary ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Phenyl Ring ◽  
Molecular Conformation ◽  
Ring System ◽  
Pyrazine Ring ◽  
Π Interactions ◽  
Compound C ◽  
Phenyl Rings

In the title compound, C13H12N6O, the pyrazolo[3,4-b]pyrazine ring system is planar (r.m.s. deviation for the nine fitted atoms = 0.024 Å) and makes a dihedral angle of 5.72 (6)° with the pendent phenyl ring. The molecular conformation is stabilized by intramolecular N—H...O and C—H...N hydrogen bonds, each generating anS(6) loop. In the crystal, pairs of molecules are connected into inversion dimers by strong N—H...O hydrogen bonds, formingR22(8) ring motifs. These are linked into sheets parallel to (100)viaN—H...N hydrogen bonds; π–π interactions between symmetry-related pyrazole and phenyl rings [centroid–centroid distances = 3.4453 (9) Å] within the sheets are also noted.

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