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).

scholarly journals Crystal structure of methyl (E)-4-[2-(8-hydroxyquinolin-2-yl)vinyl]benzoate

2016 ◽  
Vol 72 (9) ◽  
pp. 1251-1253
Author(s):  
Yu-Xing Xu ◽  
Wei-Ji Hu ◽  
Guo-Liang Zhao
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Acetic Anhydride ◽  
Nitrogen Atmosphere ◽  
Ring System ◽  
Quinoline Ring ◽  
Compound C ◽  
Perkin Reaction ◽  
Ring Motif

The title compound, C19H15NO3, was synthesized by a Perkin reaction of 2-methyl-8-hydroxyquinoline and 4-formyl-2-methylbenzoate in acetic anhydride under a nitrogen atmosphere. The molecule has anEconformation about the C=C bond, and the quinoline ring system and the benzene ring are inclined to one another by 29.22 (7)°. There is an intramolecular O—H...N hydrogen bond in the 8-hydroxyquinoline moiety. In the crystal, molecules are linked by pairs of O—H...O hydrogen bonds, forming inversion dimers with anR22(28) ring motif. The dimers are linked by C—H...O hydrogen bonds and C—H...π interactions, forming sheets parallel to plane (10-1).

scholarly journals 2-(4-Bromophenyl)-2-oxoethyl anthracene-9-carboxylate

2012 ◽  
Vol 68 (6) ◽  
pp. o1876-o1876 ◽  
Author(s):  
Hoong-Kun Fun ◽  
Safra Izuani Jama Asik ◽  
B. Garudachari ◽  
Arun M. Isloor ◽  
M. N Satyanarayan
Keyword(s):  
Hydrogen Bond ◽  
Ring System ◽  
Maximum Deviation ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Compound C ◽  
Dimensional Network ◽  
Benzene Rings ◽  
The Mean ◽  
Ring Motif

In the title compound, C23H15BrO3, the anthracene ring system is essentially planar [maximum deviation = 0.29 (2) Å] and makes a dihedral angle of 5.74 (8)° with the mean plane of the bromo-substituted benzene ring. An intramolecular C—H...O hydrogen bond generates an S(9) ring motif. In the crystal, molecules are linked by C—H...O interactions, forming a two-dimensional network parallel to the ac plane. π–π stacking interactions are observed between benzene rings [centroid–centroid distances = 3.5949 (14) and 3.5960 (13) Å].

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 ethyl (4R)-2-amino-7-hydroxy-4-phenyl-4H-chromene-3-carboxylate

2015 ◽  
Vol 71 (7) ◽  
pp. o519-o520
Author(s):  
Joel T. Mague ◽  
Shaaban K. Mohamed ◽  
Mehmet Akkurt ◽  
Sabry H. H. Younes ◽  
Mustafa R. Albayati
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Phenyl Ring ◽  
Membered Ring ◽  
Two Dimensional ◽  
Crystal Stability ◽  
Compound C ◽  
Dimensional Network

In the title compound, C18H17NO4, the dihedral angle between the phenyl ring and the fused six-membered ring is 77.65 (4)°. The conformation of the molecule is determined in part by an intramolecular N—H...O hydrogen bond between the amino H atom and the carbonyl O atom, forming anS(6) motif. In the crystal, molecules are linked into N—H...O hydrogen-bonded inversion dimers which are then connected into chains along [001], forming a two-dimensional network parallel to (100)viaO—H...O hydrogen bonds. C—H...O interactions further contribute to the crystal stability. The ethyl group is disordered over two sets of sites in a 0.801 (5):0.199 (5) ratio.

Benzyldiethylammonium chloride

2006 ◽  
Vol 62 (5) ◽  
pp. o1735-o1737 ◽  
Author(s):  
Daniel Lorono-Gonzalez
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Ionic Species ◽  
Polar Space ◽  
Crystal Structure Analysis ◽  
Two Dimensional ◽  
Compound C ◽  
Dimensional Network

The title compound, C11H18N+·Cl−, crystallizes in a non-centrosymmetric polar space group and possesess normal geometric parameters. The crystal structure analysis reveals a discrete ionic species, for which the packing is consolidated by an N—H...Cl hydrogen bond and C—H...Cl hydrogen bonds, resulting in a two-dimensional network.

scholarly journals Crystal structure of ethyl 2-amino-4-(4-chlorophenyl)-4H-1-benzothieno[3,2-b]pyran-3-carboxylate

2015 ◽  
Vol 71 (8) ◽  
pp. o619-o620
Author(s):  
Mohamed Bakhouch ◽  
Asmae Mahfoud ◽  
Mohamed El Yazidi ◽  
Mohamed Saadi ◽  
Lahcen El Ammari
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Ring System ◽  
The Other ◽  
Bond Forming ◽  
Compound C ◽  
Fused Ring ◽  
The Mean ◽  
Fused Ring System ◽  
Ring Motif

The title compound, C20H16ClNO3S, is built up from three fused rings, one five- and two six-membered rings, linked to a 3-ethoxycarbonyl group and to a 4-chlorophenyl ring. The hydropyran ring has a flattened envelope conformation, with the C atom substituted by the 4-chlorophenyl ring as the flap (displaced by 0.077 (2) Å from the plane through the other atoms). The fused three-ring system is quasi-planar (r.m.s. deviation = 0.057 Å), with the largest deviation from the mean plane being 0.106 (1) Å for the C atom substituted by the 4-chlorophenyl ring. The 4-chlorophenyl ring is approximately perpendicular to the mean plane of the fused ring system, as indicated by the dihedral angle of 77.32 (6)° between their mean planes. There is an intramolecular N—H...O hydrogen bond forming anS(6) ring motif. In the crystal, molecules are linked by pairs of N—H...O hydrogen bonds, forming inversion dimers with anR22(12) ring motif. There are also short intermolecular Cl...O interactions present [3.1226 (12) Å] between neighbouring molecules.

scholarly journals Crystal structure of 5-(1-benzofuran-2-yl)-3-(4-methylphenyl)-4,5-dihydro-1,2-oxazol-5-ol

2015 ◽  
Vol 71 (7) ◽  
pp. o492-o493
Author(s):  
A. J. Ravi ◽  
A. C. Vinayaka ◽  
S. Jeyaseelan ◽  
M. P. Sadashiva ◽  
H. C. Devarajegowda
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Ring System ◽  
The Other ◽  
Dihedral Angles ◽  
Compound C ◽  
Dimensional Network ◽  
The Mean

In the title compound, C18H15NO3, the isoxazole moiety adopts a shallow envelope conformation, with the C atom bearing the OH group displaced by 0.148 (1) Å from the mean plane through the other four atoms. The mean plane of this ring (all atoms) subtends dihedral angles of 87.19 (6) and 15.51 (7)° with the benzofuran ring system (r.m.s. deviation = 0.007 Å) and the 4-methylphenyl ring, respectively. In the crystal, molecules are linked by O—H...N hydrogen bonds, generating [001]C(5) chains, with adjacent molecules in the chain related byc-glide symmetry. Weak C—H...O interactions link the chains into a three-dimensional network.

N-(7-Dimethoxymethyl-4-oxo-3,4-dihydropteridin-2-yl)-2,2-dimethylpropionamide monohydrate

2007 ◽  
Vol 63 (11) ◽  
pp. o4249-o4250
Author(s):  
Hoong-Kun Fun ◽  
Shyamaprosad Goswami ◽  
Annada C. Maity ◽  
Sibaprasad Maity ◽  
Suchada Chantrapromma
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Ring System ◽  
Water Molecules ◽  
Two Dimensional ◽  
Compound C ◽  
The Mean ◽  
Intramolecular Hydrogen ◽  
Ring Motif

In the title compound, C14H19N5O4·H2O, the 3,4-dihydropteridine ring system deviates sigificantly from planarity, the dihedral angle between the mean planes of the two rings being 3.93 (9)°. Intramolecular N—H...O hydrogen bonding generates an S(6) ring motif. The water molecule forms O—H...O and O—H...N intramolecular hydrogen bonds with the substituted pteridine molecule. In the crystal structure, the substituted pteridine molecules are linked by N—H...N hydrogen bonds into chains running along the c direction. These chains are further connected to the water molecules by N—H...O, O—H...O and O—H...N hydrogen bonds to form two-dimensional networks parallel to the bc plane. The crystal structure is stabilized by intra- and intermolecular N—H...O, N—H...N, O—H...O and O—H...N hydrogen bonds, together with weak C—H...O and C—H...N intra- and intermolecular interactions. C—H...π interactions are also observed.

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 Crystal structure of ethyl 6-bromo-2-[(E)-2-phenylethenyl]quinoline-4-carboxylate

2015 ◽  
Vol 71 (2) ◽  
pp. o121-o121 ◽  
Author(s):  
T. O. Shrungesh Kumar ◽  
S. Naveen ◽  
M. N. Kumara ◽  
K. M. Mahadevan ◽  
N. K. Lokanath
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Phenyl Ring ◽  
Ring System ◽  
Ethynyl Group ◽  
Bond Forming ◽  
Compound C ◽  
Ring Motif

In the title compound, C20H16BrNO2, the dihedral angle between the quinolone ring system mean plane (r.m.s. deviation = 0.018 Å) and the phenyl ring bridged by the ethynyl group, is 25.44 (14)°. There is an intramolecular C—H...O hydrogen bond forming anS(6) ring motif. In the crystal, molecules are linkedviaC—H...O hydrogen bonds forming chains propagating along theb-axis direction.

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