Bis{μ-2-[(4,6-bis{(2-hydroxy-5-methylphenyl)[(pyridin-2-yl)methyl]amino} -1,3,5-triazin-2-yl)[(pyridin-2-yl-κN)methyl]amino-κN] -4-methylphenolato-1:2 2 O:O}bis[(nitrato-κ 2 O,O′)zinc]-acetonitrile-water (2/4/1)

Abstract

The title compound, [Zn 2(C 42H 38N 9O 3) 2(NO 3) 2] ·2CH 3CN·0.5H 2O, is a bis-phenolate-bridged dinuclear Zn II complex. The asymmetric unit comprises half the zinc complex (the full complex is completed by the application of a centre of inversion), one acetonitrile solvent molecule and a quarter of a water molecule (located on a twofold axis with half-occupancy; H atoms were not located for this molecule). Each triazine-based multidentate ligand uses a phenolate group to bridge Zn II ions, generating a Zn 2O 2 core. The Zn II ions are five-coordinate, with an additional long Zn - O contact [2.6465 (16) Å], and include a semibidentate nitrate ion and a N,N′,O-tridentate mode of the ligand in the coordination sphere. Non-coordinating pyridine groups form intramolecular O - H⋯N hydrogen bonds with phenol groups. As suggested by the short O⋯O donor-acceptor distances between the disordered water molecules and phenol O atoms, these groups also participate in hydrogen bonding.