Crystal structure of bis-{1-phenyl-3-methyl-4-[(quinolin-3-yl)imino-methyl-?N]-1H-pyrazol-5-olato-?O}zinc methanol 2.5-solvate from synchrotron X-ray diffraction.

ABSTRACT: The title compound, [Zn(C20H15N4O)2]·2.5CH3OH, I, was synthesized via the reaction of zinc acetate with the respective ligand and isolated as a methanol solvate, i.e., as I·2.5CH3OH. The crystal structure is triclinic (space group P-1), with two complex mol-ecules ( A and B ) and five methanol solvent mol-ecules in the asymmetric unit. One of the five methanol solvent mol-ecules is disordered over two sets of sites, with an occupancy ratio of 0.75:0.25. Mol-ecules A and B are conformers and distinguished by the conformations of the bidentate 1-phenyl-3-methyl-4-[(quinolin-3-yl)imino-meth-yl]-1H-pyrazol-5-olate ligands. In both mol-ecules, the zinc cations have distorted tetra-hedral coordination spheres, binding the monoanionic ligands through the pyrazolo-late O and imine N atoms. The two ligands adopt slightly different conformations in terms of the orientation of the terminal phenyl and quinoline substituents with respect to the central pyrazolo-late moiety. The mol-ecular geometries of A and B are supported by intra-molecular C-H?O and C-H?N hydrogen bonds. In the crystal of I, mol-ecules form dimers both by secondary inter-molecular Zn?O [3.140?(2)-3.553?(3)?Å] and ?-? stacking inter-actions. The dimers are linked by inter-molecular hydrogen bonds through the solvent methanol mol-ecules into a three-dimensional network.

SUBMITTER: Burlov AS 

PROVIDER: S-EPMC5598850 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature