Transition metal complexes with pyrazole-derived ligands. X. [Zn(CH3COO)2L2].2MeOH (L = 3-amino-5-phenylpyrazole)

Abstract

Monocrystals of the title complex, bis(acetato-O)bis(3-amino-5-phenylpyrazole-N2)zinc(II) dimethanol solvate, [Zn(C2H3O2)2(C9H 9N3)2]·2CH4O, were obtained by crystallization from a methanolic solution of Zn(OAc)2-2H2O and 3-amino-5-phenylpyrazole (L) (1:2 molar ratio). The two pyridine-N atoms from the pyrazole derivative and two O atoms from the acetate groups are coordinated to the Zn atom in a distorted tetrahedral arrangement. The phenyl and aminopyrazole rings in both ligand molecules are planar within experimental accuracy. As a consequence of the arrangement of the molecules in the unit cell, the dihedral angles between the phenyl and aminopyrazole ring planes in the two ligand molecules are 5.6(2) and 27.4(2)°.