Luminescent properties, internal hydrogen bonds and π–π interactions of Cd(II), Zn(II), Co(II) complexes based on 2,8-di(pyridin-4-yl)dibenzothiophene and dicarboxylate ligands

2015 ◽  
Vol 1086 ◽  
pp. 118-124 ◽  
Author(s):  
Cheng-Yan Huang ◽  
Jie Wang ◽  
Zhi-Yuan Ding ◽  
Kai Cui
Keyword(s):  
Hydrogen Bonds ◽  
Luminescent Properties ◽  
Π Interactions ◽  
Internal Hydrogen

scholarly journals N-(3-Chloro-4-ethoxy-1-methyl-1H-indazol-5-yl)-4-methoxybenzenesulfonamide

2014 ◽  
Vol 70 (6) ◽  
pp. o679-o679 ◽  
Author(s):  
Hakima Chicha ◽  
El Mostapha Rakib ◽  
Abdellah Hannioui ◽  
Mohamed Saadi ◽  
Lahcen El Ammari
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Ring System ◽  
Dihedral Angles ◽  
Ethoxy Group ◽  
Π Interactions ◽  
Compound C ◽  
The Mean

The indazole ring system of the title compound, C17H18ClN3O4S, is almost planar (r.m.s. deviation = 0.0113 Å) and forms dihedral angles of 32.22 (8) and 57.5 (3)° with the benzene ring and the mean plane through the 4-ethoxy group, respectively. In the crystal, molecules are connected by pairs of N—H...O hydrogen bonds into inversion dimers, which are further linked by π–π interactions between the diazole rings [intercentroid distance = 3.4946 (11) Å], forming chains parallel to [101].

scholarly journals 3-(Adamantan-1-yl)-4-benzyl-1H-1,2,4-triazole-5(4H)-thione

2014 ◽  
Vol 70 (7) ◽  
pp. o766-o767 ◽  
Author(s):  
Fatmah A. M. Al-Omary ◽  
Hazem A. Ghabbour ◽  
Ali A. El-Emam ◽  
C. S. Chidan Kumar ◽  
Hoong-Kun Fun
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Triazole Ring ◽  
Axis Direction ◽  
Π Interactions ◽  
Compound C ◽  
Supramolecular Chains

The title compound, C19H23N3S, is a functionalized triazoline-3-thione derivative. The benzyl ring is almost normal to the planar 1,2,4-triazole ring (r.m.s. deviation = 0.007 Å) with a dihedral angle of 86.90 (7)°. In the crystal, molecules are linked by pairs of N—H...S hydrogen bonds, forming inversion dimers that encloseR22(8) loops. The crystal packing is further stabilized by weak C—H...π interactions that link adjacent dimeric units into supramolecular chains extending along thea-axis direction.

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 Crystal structure of bis(azido-κN)bis[2,5-bis(pyridin-2-yl)-1,3,4-thiadiazole-κ2N2,N3]cobalt(II)

2015 ◽  
Vol 71 (5) ◽  
pp. 452-454 ◽  
Author(s):  
Abdelhakim Laachir ◽  
Fouad Bentiss ◽  
Salaheddine Guesmi ◽  
Mohamed Saadi ◽  
Lahcen El Ammari
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Title Complex ◽  
Octahedral Coordination ◽  
Maximum Deviation ◽  
Coordination Geometry ◽  
Acta Cryst ◽  
Π Interactions ◽  
The Mean

In the mononuclear title complex, [Co(N3)2(C12H8N4S)2], the cobalt(II) atom is located on an inversion centre and displays an axially weakly compressed octahedral coordination geometry. The equatorial positions are occupied by the N atoms of two 2,5-bis(pyridin-2-yl)-1,3,4-thiadiazole ligands, whereas the axial positions are occupied by N atoms of the azide anions. The thiadiazole and pyridine rings linked to the metal are almost coplanar, with a maximum deviation from the mean plane of 0.0273 (16) Å. The cohesion of the crystal is ensured by weak C—H...N hydrogen bonds and by π–π interactions between pyridine rings [intercentroid distance = 3.6356 (11) Å], forming a layered arrangement parallel to (001). The structure of the title compound is isotypic with that of the analogous nickel(II) complex [Laachiret al.(2013).Acta Cryst.E69, m351–m352].

scholarly journals Crystal structure of 2-benzylamino-4-p-tolyl-6,7-dihydro-5H-cyclopenta[b]pyridine-3-carbonitrile

2015 ◽  
Vol 71 (2) ◽  
pp. 192-194
Author(s):  
R. A. Nagalakshmi ◽  
J. Suresh ◽  
S. Maharani ◽  
R. Ranjith Kumar ◽  
P. L. Nilantha Lakshman
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Pyridine Ring ◽  
Three Dimensional ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Cyclopentane Ring ◽  
Ring Motif

The title compound, C23H21N3, comprises a 2-amino-3-cyanopyridine ring fused with a cyclopentane ring. The later adopts an envelope conformation with the central methylene C atom as the flap. The benzyl and andp-tolyl rings are inclined to one another by 56.18 (15)°, and to the pyridine ring by 81.87 (14) and 47.60 (11)°, respectively. In the crystal, molecules are linked by pairs of N—H...Nnitrilehydrogen bonds, forming inversion dimers with anR22(12) ring motif. The dimers are linked by C—H...π and π–π interactions [centroid–centroid distance = 3.7211 (12) Å], forming a three-dimensional framework.

scholarly journals 2-[2-(2-Nitrophenyl)-4,5-diphenyl-1H-imidazol-1-yl]-3-phenylpropan-1-ol

2014 ◽  
Vol 70 (5) ◽  
pp. o621-o621
Author(s):  
Yizhen Li ◽  
Pu Mao ◽  
Yongmei Xiao ◽  
Liangru Yang ◽  
Lingbo Qu
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Molecular Conformation ◽  
Imidazole Ring ◽  
Dihedral Angles ◽  
Axis Direction ◽  
Π Interactions ◽  
Compound C

In the title compound, C30H25N3O3, the central imidazole ring forms dihedral angles of 77.34 (6), 12.56 (6) and 87.04 (6)°, respectively, with theo-nitrobenzene ring and the phenyl substituents in the 5- and 4-positions. The molecular conformation is stabilized by weak intramolecular C—H...π interactions. In the crystal, molecules are linked by O—H...N hydrogen bonds, forming chains running parallel to theb-axis direction.

Systhesis, Characterization and Spectroscopic Properties of (2E,6E)-2,6-Bis(2,3,4-tri-methoxy-benzylidene)cyclohexanone

2011 ◽  
Vol 396-398 ◽  
pp. 2338-2341
Author(s):  
Xing Chuan Wei ◽  
Zhi Li Liu ◽  
Kun Zhang ◽  
Zhi Yun Du ◽  
Xi Zheng
Keyword(s):  
Crystal Structure ◽  
Acetic Acid ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Spectroscopic Properties ◽  
Spectral Studies ◽  
Double Bonds ◽  
X Ray ◽  
Π Interactions ◽  
X Ray Crystallography

In this paper, (2E,6E)-2,6-Bis(2,3,4-tri-methoxy -benzylidene)cyclohexanone (omitted as tmbcho) (1) was obtained by the reaction of acetic acid, tetrahydrofuran, cyclohexanone and 2,3,4-tri-methoxy-benzaldehyde. Three non-classic hydrogen bonds were observed in the compound. X-ray crystallography shows that the crystal structure is stabilized by intermolecular C-H•••π interactions and it contains plenty of conjugated double bonds. The title compound was characterized by UV-vis and fluorescent spectral studies.

scholarly journals Crystal structure of (±)-(4RS,5RS,7SR)-4-[(1RS,2RS,3RS,6RS)-3-benzoyloxy-2-(2-hydroxyethyl)-6-methoxymethoxy-2-methylcyclohexyl]-8,10,10-trimethyl-2-oxo-1,3-dioxaspiro[4.5]dec-8-en-7-yl benzoate benzene monosolvate

2015 ◽  
Vol 71 (1) ◽  
pp. 8-11 ◽  
Author(s):  
Takeshi Oishi ◽  
Yuu Yamaguchi ◽  
Keisuke Fukaya ◽  
Tomoya Sugai ◽  
Ami Watanabe ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Benzene Molecule ◽  
Π Interactions ◽  
Envelope Conformation ◽  
Compound C ◽  
Graph Set

In the title compound, C36H44O10·C6H6, the dioxolane ring adopts an envelope conformation with the C atom bonded to the H atom as the flap, while the cyclohexene and cyclohexane rings are in half-chair and chair conformations, respectively. In the crystal, a pair of O—H...O hydrogen bonds with anR22(26) graph-set motif connect the benzoate molecules into an inversion dimer. The dimers are linked by a weak C—H...O interaction into a tape structure along [01-1]. The benzene molecule links the tapes through C—H...O and C—H...π interactions, forming a sheet parallel to (100).

scholarly journals Crystal structure of 2-methyl-N-{[2-(pyridin-2-yl)ethyl]carbamothioyl}benzamide

2015 ◽  
Vol 71 (9) ◽  
pp. o636-o636
Author(s):  
Nadiah Ameram ◽  
Farook Adam
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Thiourea Derivative ◽  
Π Interactions ◽  
Compound C ◽  
Benzene Rings ◽  
Ring Motif

In the title compound, C16H17N3OS, a benzoyl thiourea derivative, the planes of the pyridine and benzene rings are inclined to one another by 66.54 (9)°. There is an intramolecular N—H...O hydrogen bond present forming anS(6) ring motif. In the crystal, molecules are linkedviapairs of N—H...N hydrogen bonds, forming inversion dimers, which are reinforced by pairs of C—H...S hydrogen bonds. The dimers are linkedviaC—H...π interactions, forming ribbons along [010].

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