scholarly journals Crystal structure of new organically templated copper sulfate with 2-aminopyridinium

2015 ◽  
Vol 71 (11) ◽  
pp. m191-m192 ◽  
Author(s):  
Tamara J. Lukianova ◽  
Vasyl Kinzhybalo ◽  
Adam Pietraszko
Keyword(s):  
Crystal Structure ◽  
Copper Sulfate ◽  
Title Compound ◽  
Three Dimensional ◽  
Water Molecules ◽  
Organic Layers ◽  
Π Interactions ◽  
Lattice Water ◽  
Compound C ◽  
Centroid Distance

The title compound, (C5H7N2)2[Cu(H2O)6](SO4)2·4H2O [systematic name: bis(2-aminopyridinium) hexaaquacopper(II) bis(sulfate) tetrahydrate], comprises axially elongated hexaaqua-coordinated octahedral CuIIions located on an inversion centre, non-coordinating sulfate anions, 2-aminopyridinium cations and lattice water molecules. The crystal structure is built of successive inorganic and organic layers extending parallel to (001) that are connected by an extensive three-dimensional hydrogen-bonded network of the type O—H...O and N—H...O, as well as π–π interactions [centroid–centroid distance 3.4140 (14) Å, offset 0.277 Å].

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 Crystal structure of 4,4′-dimethoxy-2,2′-bipyridine

2015 ◽  
Vol 71 (8) ◽  
pp. o623-o624
Author(s):  
Yukiko Kusano ◽  
Keiji Ohno ◽  
Takashi Fujihara
Keyword(s):  
Crystal Structure ◽  
Dihedral Angle ◽  
Title Compound ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Π Interactions ◽  
Compound C ◽  
Dimensional Network ◽  
Centroid Distance ◽  
Sheet Structure

In the title compound, C12H12N2O2, the dihedral angle between the planes of the two pyridine rings is 5.8 (1)°. Neighbouring molecules are linkedviaC(Me)—H...N interactions, generating a two-dimensional sheet structure; C—H...π interactions further link the molecules into a three-dimensional network. An overlapped arrangement of parallel pyridine rings in neighbouring molecules [centroid-to-centroid distance = 3.6655 (15) Å] is observed in the crystal structure.

scholarly journals Crystal structure of (E)-N′-benzylidene-1-methyl-4-nitro-1H-pyrrole-2-carbohydrazide

2014 ◽  
Vol 70 (9) ◽  
pp. o995-o995
Author(s):  
Zhijun Wang ◽  
Chengyong Zhou ◽  
Lei Yan ◽  
Jinglin Wang
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Benzene Rings

In the title compound, C13H12N4O3, the dihedral angle between the planes of the pyrrole and benzene rings is 7.47 (1)°. In the crystal, molecules are arranged in sheets lying parallel to (101). Neighbouring sheets are linked by N—H...O hydrogen bonds, weak π–π [centroid–centroid distance between the pyrrole rings = 3.765 (11) Å] and C—H...π interactions, forming a three-dimensional structure.

scholarly journals Crystal structure of 1,1′-(pyridine-2,6-diyl)bis[N-(pyridin-2-ylmethyl)methanaminium] dichloride dihydrate

2021 ◽  
Vol 77 (12) ◽  
Author(s):  
Layachi Merabet ◽  
Marine Tassé ◽  
Sonia Mallet-Ladeira ◽  
Lakhemici Kaboub ◽  
Isabelle Malfant
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Water Molecules ◽  
Π Interactions ◽  
Lattice Water ◽  
Compound C

In the title compound, C19H23N5 2+·2Cl−·2H2O, the two pyridine side arms are not coplanar, with the terminal pyridine rings subtending a dihedral angle of 26.45 (6)°. In the crystal, hydrogen bonds, intermolecular C—H...Cl contacts and a weak C—H...O interaction connect the molecule with neighbouring chloride counter-anions and lattice water molecules. The crystal packing also features by π–π interactions with centroid-centroid distances of 3.4864 (12) and 3.5129 (13) Å.

scholarly journals 3,4,7,8-Tetramethyl-1,10-phenanthrolin-1-ium nitrate monohydrate

2012 ◽  
Vol 68 (6) ◽  
pp. o1931-o1932
Author(s):  
Ke-Jie Zhang ◽  
Yan-Fang Zhang
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Water Molecule ◽  
Title Compound ◽  
Mirror Plane ◽  
Water Molecules ◽  
Lattice Water ◽  
Compound C ◽  
Centroid Distance ◽  
Nitrate Anions

In the crystal of the title compound, C16H17N2 +·NO3 −·H2O, the tetramethyl-1,10-phenanthrolinium cations, nitrate anions and lattice water molecules are all located on a mirror plane with the methyl H atoms of the cation equally disordered over two sites about the mirror plane. The cation, anion and water molecule are linked by O—H...O and N—H...O hydrogen bonds into a sheet parallel to the bc plane. π–π stacking between phenanthroline ring systems is observed in the crystal structure, the centroid–centroid distance being 3.4745 (6) Å.

scholarly journals Crystal structure of 5-bromo-2,4,6-trimethyl-3-[(2-methylphenyl)sulfinyl]-1-benzofuran

2015 ◽  
Vol 71 (8) ◽  
pp. o602-o603
Author(s):  
Hong Dae Choi ◽  
Uk Lee
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Three Dimensional ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
The Mean

In the title compound, C18H17BrO2S, the dihedral angle between the mean planes of the benzofuran [r.m.s. deviation = 0.025 (2) Å] and the 2-methylbenzene rings is 87.87 (5)°. In the crystal, molecules are linked into supramolecular layers parallel to (0-11) by C—H...O hydrogen bonds and Br...Br [3.4521 (5) Å] contacts. These are connected into a three-dimensional architectureviaC—H...π interactions, which link inversion-related molecules into dimers, and π–π interactions between the benzene and furan rings [centroid–centroid distance = 3.573 (2) Å].

scholarly journals Crystal structure of bergapten: a photomutagenic and photobiologically active furanocoumarin

2016 ◽  
Vol 72 (8) ◽  
pp. 1194-1196 ◽  
Author(s):  
A. K. Bauri ◽  
Sabine Foro ◽  
Quynh Nguyen Nhu Do
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Ring System ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Fused Ring ◽  
Fused Ring System

The title compound, C12H8O4, is a furanocoumarin [systematic name: 4-methoxy-7H-furo[3,2-g]chromen-7-one], which was isolated from the Indian herbT. stictocarpum. The molecule is almost planar with an r.m.s. deviation of 0.024 Å for the hetero atoms of the fused-ring system. In the crystal, molecules are linked by C—H...O hydrogen bonds, forming a three-dimensional framework. There are offset π–π interactions present involving the coumarin moieties stacking along thea-axis direction [shortest inter-centroid distance = 3.717 (3) Å].

scholarly journals Crystal structure of 4,4′,4′′-(1,3,5-triazine-2,4,6-triyl)tripyridinium trichloride 2.5-hydrate

2015 ◽  
Vol 71 (11) ◽  
pp. o858-o859
Author(s):  
Bo-Kai Ling ◽  
Xiao-Long Feng ◽  
Yang Li ◽  
Tian-Gang Luan
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Organic Cations ◽  
Water Molecules ◽  
Supramolecular Architecture ◽  
Asymmetric Unit ◽  
Compound C ◽  
Centroid Distance

The asymmetric unit of the title compound, C18H15N63+·3Cl−·2.5H2O, contains two independent (1,3,5-triazine-2,4,6-triyl)tripyridinium cations. Both cations are approximately planar, the r.m.s. deviations of fitted non-H atoms being 0.045 and 0.051 Å. In the crystal, extensive O—H...Cl, O—H...O, N—H...Cl and N—H...O hydrogen bonds and weak C—H...Cl and C—H...O interactions link the organic cations, Cl−anions and water molecules into a three-dimensional supramolecular architecture. π–π stacking between the pyridine rings of adjacent cations is also observed, the centroid-to-centroid distance being 3.7578 (8) Å.

scholarly journals 2-Thioureido-1H-benzimidazol-3-ium chloride monohydrate

2014 ◽  
Vol 70 (5) ◽  
pp. o553-o553
Author(s):  
C. N. Sundaresan ◽  
Dheeraj Kumar Singh ◽  
Jagadeesh Babu Nanubolu
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Ring System ◽  
Water Molecules ◽  
Compound C ◽  
Dimensional Network ◽  
Centroid Distance ◽  
The Mean ◽  
Chloride Monohydrate

In the title compound, C8H9N4S+·Cl−·H2O, the cation is approximately planar, with a dihedral angle of 7.71 (8)° between the mean planes of the benzoimidazole ring system and the thiourea unit. In the crystal, cations, anions and water molecules of crystallization are linked by O—H...Cl, N—H...O, N—H...Cl and N—H...S hydrogen bonds into a three-dimensional network. π–π stacking is observed between the benzene and imidazole rings of neighbouring molecules, the centroid–centroid distance being 3.5774 (11) Å.

scholarly journals Crystal structure of 3-amino-2-ethylquinazolin-4(3H)-one

2015 ◽  
Vol 71 (9) ◽  
pp. o650-o651
Author(s):  
Gamal A. El-Hiti ◽  
Keith Smith ◽  
Amany S. Hegazy ◽  
Mohammed Baashen ◽  
Benson M. Kariuki
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Torsion Angle ◽  
Title Compound ◽  
Ethyl Group ◽  
Π Interactions ◽  
Step Structure ◽  
Compound C ◽  
Centroid Distance

The molecule of the title compound, C10H11N3O, is planar, including the ethyl group, as indicated by the N—C—C—C torsion angle of 1.5 (2)°. In the crystal, inversion-related molecules are stacked along theaaxis. Molecules are oriented head-to-tail and display π–π interactions with a centroid-to-centroid distance of 3.6664 (8) Å. N—H...O hydrogen bonds between molecules generate a `step' structure through formation of anR22(10) ring.

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