Di-μ-chlorido-bis-{chlorido[(R)/(S)-1,5-diphenyl-3-(2-pyridyl-κN) -2-pyrazoline-κN2]zinc(II)}

Abstract

In the centrosymmetric binuclear title compound, [Zn2C l4(C20H17N3)2], the coordination geometry of the ZnII ion can be described as a distorted ZnN2Cl3 trigonal bipyramid ( τ = 0.89), arising from the N,N′-bidentate ligand, a terminal chloride ion and two bridging chloride ions. The N atoms occupy one axial and one equatorial site and the terminal chloride ion occupies an equatorial site. The dihedral angle between the pyridine and pyrazole rings is 12.8 (2)°. In the crystal, aromatic π-π stacking [centroid-centroid separations = 3.812 (3) and 3.848 (3) Å] and C - H⋯Cl and C - H⋯π interactions help to establish the packing.