Crystal structure of bis­{1-phenyl-3-methyl-4-[(quinolin-3-yl)imino­methyl-κN]-1H-pyrazol-5-olato-κO}zinc methanol 2.5-solvate from synchrotron X-ray diffraction

The title compound, [Zn(C(20)H(15)N(4)O)(2)]·2.5CH(3)OH, I, was synthesized via the reaction of zinc acetate with the respective ligand and isolated as a methanol solvate, i.e., as I·2.5CH(3)OH. The crystal structure is triclinic (space group P-1), with two complex mol­ecules (A and B) and five methanol solvent mol­ecules in the asymmetric unit. One of the five methanol solvent mol­ecules is disordered over two sets of sites, with an occupancy ratio of 0.75:0.25. Mol­ecules A and B are conformers and distinguished by the conformations of the bidentate 1-phenyl-3-methyl-4-[(quinolin-3-yl)imino­meth­yl]-1H-pyrazol-5-olate ligands. In both mol­ecules, the zinc cations have distorted tetra­hedral coordination spheres, binding the monoanionic ligands through the pyrazolo­late 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 pyrazolo­late moiety. The mol­ecular geometries of A and B are supported by intra­molecular C—H⋯O and C—H⋯N hydrogen bonds. In the crystal of I, mol­ecules form dimers both by secondary inter­molecular Zn⋯O [3.140 (2)–3.553 (3) Å] and π–π stacking inter­actions. The dimers are linked by inter­molecular hydrogen bonds through the solvent methanol mol­ecules into a three-dimensional network.