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-1:2κ2 O:O}bis­[(nitrato-κ2 O,O′)zinc]–acetonitrile–water (2/4/1)

The title compound, [Zn(2)(C(42)H(38)N(9)O(3))(2)(NO(3))(2)]·2CH(3)CN·0.5H(2)O, 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 mol-ecule and a quarter of a water mol-ecule (located on a twofold axis with half-occupancy; H atoms were not located for this mol-ecule). Each triazine-based multidentate ligand uses a phenolate group to bridge Zn(II) ions, generating a Zn(2)O(2) core. The Zn(II) ions are five-coordinate, with an additional long Zn-O contact [2.6465 (16) Å], and include a semi-bidentate nitrate ion and a N,N',O-tridentate mode of the ligand in the coordination sphere. Non-coordinating pyridine groups form intra-molecular 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.