scholarly journals Di-μ-methanolato-κ4O:O-bis[bis(3-methyl-5-phenyl-1H-pyrazole-κN2)(nitrato-κO)copper(II)]

2012 ◽  
Vol 68 (4) ◽  
pp. m503-m503 ◽  
Author(s):  
Xu-Guang Li ◽  
Meng-Meng Gao ◽  
Seik Weng Ng
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Copper Nitrate ◽  
Methanol Solution ◽  
Nitrate Anion ◽  
Nitrate Ion ◽  
Apical Site ◽  
Pyrazole Ligands

Copper nitrate in methanol solution cleaves the N—Cmethanolbond when reacted with 3-methyl-5-phenylpyrazole-1-methanol to yield the centrosymmetric dinuclear title compound, [Cu2(CH3O)2(NO3)2(C10H10N2)4], in which the CuIIatom is linked to a nitrate ion, two methanolate ions and two pyrazole ligands in a distorted square-pyramidal environment. The O atom of the nitrate anion occupies the apical site. The crystal structure features intramolecular N—H...O hydrogen bonds.

6-Chloro-N′-(2,4-dichlorobenzylidene)nicotinohydrazide

2007 ◽  
Vol 63 (11) ◽  
pp. o4471-o4471 ◽  
Author(s):  
Feng Zhi ◽  
Yi-Lin Yang
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Condensation Reaction ◽  
Acid Hydrazide ◽  
Methanol Solution ◽  
Compound C

The title compound, C13H8Cl3N3O, was synthesized by the condensation reaction of 2,4-dichlorobenzaldehyde with 6-chloronicotinic acid hydrazide in a methanol solution. The Schiff base molecule displays a trans configuration with respect to the C=N and C—N bonds. The dihedral angle between the benzene and pyridine rings is 5.5 (3)°. The crystal structure is stabilized by intermolecular N—H...O, C—H...O and C—H...N hydrogen bonds.

scholarly journals Unexpected formation and crystal structure of tetrakis(1H-pyrazole-κN2)palladium(II) dichloride

2014 ◽  
Vol 70 (12) ◽  
pp. 486-488
Author(s):  
Thomas Wagner ◽  
Nena Christiansen ◽  
Cristian G. Hrib ◽  
Dieter E. Kaufmann ◽  
Frank T. Edelmann
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Coordination Sphere ◽  
Three Dimensional ◽  
Methanol Solution ◽  
Unexpected Formation ◽  
Square Planar ◽  
Pyrazole Ligands

The title salt, [Pd(C3H4N2)4]Cl2, was obtained unexpectedly by the reaction of palladium(II) dichloride with equimolar amounts of 1-chloro-1-nitro-2,2,2-tris(pyrazolyl)ethane in methanol solution. The Pd2+cation is located on an inversion centre and has a square-planar coordination sphere defined by four N atoms of four neutral pyrazole ligands. The average Pd—N distance is 2.000 (2) Å. The two chloride anions are not coordinating to Pd2+. They are connected to the complex cations through N—H...Cl hydrogen bonds. In addition, C—H...Cl hydrogen bonds are observed, leading to a three-dimensional linkage of cations and anions.

scholarly journals Bis(acetato-κ2O,O′)bis(3,5-dimethyl-1H-pyrazole-κN2)copper(II)

2009 ◽  
Vol 65 (6) ◽  
pp. m691-m692 ◽  
Author(s):  
Yuliya M. Davydenko ◽  
Igor O. Fritsky ◽  
Vadim O. Pavlenko ◽  
Franc Meyer ◽  
Sebastian Dechert
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Equatorial Plane ◽  
Title Compound ◽  
Dimensional Chain ◽  
One Dimensional ◽  
Pyrazole Ligands

In the title compound, [Cu(C2H3O2)2(C5H8N2)2], the CuIIatom has a distorted tetragonal–bipyramidal geometry, with the equatorial plane formed by two N atoms belonging to two 3,5-dimethyl-1H-pyrazole ligands and two O atoms from two acetate anions. The second O atoms of the acetate groups provide elongated Cu—O axial contacts, so that the acetates appear to be coordinated in a pseudo-chelate fashion. The pyrazole ligands are situated incispositions with respect to each other. In the crystal structure, molecules are linked through intermolecular N—H...O hydrogen bonds, forming a one-dimensional chain.

Synthesis, Crystal Structure And Spectroscopic Studies Of A Mixed Ligand Copper (Ii) Complex: Trans-Bis(Succinimidato)-Bis(Benzylamino)Cu(Ii)

2006 ◽  
Vol 61 (8) ◽  
pp. 979-982 ◽  
Author(s):  
Murat Taş ◽  
Hanife Saraçoğlu ◽  
Hümeyra Bati ◽  
Nezihe Çalışkan ◽  
Orhan Büyükgüngör
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Spectroscopic Studies ◽  
Mixed Ligand ◽  
Interplanar Angle ◽  
Space Group ◽  
Square Planar

The molecules of the title compound, [Cu(C11H13N2O2)2], lie across centres of inversion in space group P21/c and are linked by intermolecular N-H···O and C-H···O hydrogen bonds. The central Cu atom has a slightly distorted square-planar coordination comprised of four N atoms. Cu-N bond distances are 1.975(2) and 2.020(2) Å . The interplanar angle between the phenyl and succinimidato ring is 87.34(10)°

scholarly journals N-(5-Chloro-1,3-thiazol-2-yl)-2,4-difluorobenzamide

2012 ◽  
Vol 68 (6) ◽  
pp. o1857-o1857 ◽  
Author(s):  
Xi-Wang Liu ◽  
Jian-Yong Li ◽  
Han Zhang ◽  
Ya-Jun Yang ◽  
Ji-Yu Zhang
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Benzoyl Chloride ◽  
Bond Lengths ◽  
Compound C

The title compound, C10H5ClF2N2OS, was obtained by linking an amino heterocycle and a substituted benzoyl chloride. The dihedral angle between the two rings is 41.2 (2)° and the equalization of the amide C—N bond lengths reveals the existence of conjugation between the benzene ring and the thiazole unit. In the crystal, pairs of N—H...N hydrogen bonds link molecules into inversion dimers. Non-classical C—H...F and C—H...O hydrogen bonds stabilize the crystal structure.

scholarly journals Powder study of 3-azabicyclo[3.3.1]nonane-2,4-dione form 2

2006 ◽  
Vol 62 (7) ◽  
pp. o3046-o3048 ◽  
Author(s):  
Ashley T Hulme ◽  
Philippe Fernandes ◽  
Alastair Florence ◽  
Andrea Johnston ◽  
Kenneth Shankland
Keyword(s):  
Crystal Structure ◽  
Simulated Annealing ◽  
Hydrogen Bonds ◽  
Powder Diffraction ◽  
Title Compound ◽  
Variable Temperature ◽  
Polycrystalline Sample ◽  
Asymmetric Unit ◽  
X Ray ◽  
Compound C

A polycrystalline sample of a new polymorph of the title compound, C8H11NO2, was produced during a variable-temperature X-ray powder diffraction study. The crystal structure was solved at 1.67 Å resolution by simulated annealing from laboratory powder data collected at 250 K. Subsequent Rietveld refinement yielded an R wp of 0.070 to 1.54 Å resolution. The structure contains two molecules in the asymmetric unit, which form a C 2 2(8) chain motif via N—H...O hydrogen bonds.

scholarly journals Crystal structure of diisopropylaminium dichloroacetate

2015 ◽  
Vol 71 (5) ◽  
pp. o361-o361
Author(s):  
Wei Sun ◽  
Guangzhi Shan
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Compound C

In the title compound, C6H16N+·C2HCl2O2−, the cation exhibits non-crystallographicC2symmetry. In the crystal, the components are linked by N—H...O and C—H...O hydrogen bonds into chains propagating along [010].

scholarly journals Crystal structure of 5,10,15-triphenyl-20-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)porphyrin

2014 ◽  
Vol 70 (10) ◽  
pp. o1085-o1086
Author(s):  
Mathias O. Senge ◽  
Hans-Georg Eckhardt
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Central Region ◽  
Title Compound ◽  
Ring System ◽  
Compound C ◽  
Porphyrin Macrocycle ◽  
Phenyl Rings ◽  
Supramolecular Chains

In the title compound, C44H37BN4O2, the dihedral angle between the plane of the porphyrin macrocycle ring system [r.m.s. deviation = 0.159 (1) Å] and those of three phenyl rings are 66.11 (4), 74.75 (4) and 57.00 (4)°. The conformational distortion is characterized by a mixture of ruffled, saddle and in-plane distortion modes. In the crystal, the porphyrin molecules are linked by C—H...π interactions into supramolecular chains running along thea-axis direction. A pair of bifurcated N—H...(N,N) hydrogen bonds occur across the central region of the macrocycle.

scholarly journals 2,6-Bis(4-methoxybenzylidene)cyclohexanone

2006 ◽  
Vol 62 (5) ◽  
pp. o1910-o1912 ◽  
Author(s):  
Ray J. Butcher ◽  
H. S. Yathirajan ◽  
B. K. Sarojini ◽  
B. Narayana ◽  
J. Indira
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Photon Absorption ◽  
Intermolecular Hydrogen Bonds ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Compound C ◽  
Centrosymmetric Dimers

The title compound, C22H22O3, demonstrates a two-photon absorption. Its metrical parameters are similar to those of related cyclohexanone derivatives. In the crystal structure, two sets of centrosymmetric dimers formed by weak C—H...O intermolecular hydrogen bonds combine to form molecular tapes along [101].

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].

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