Bis[μ2-2,2′-dimethyl-N,N′-bis(2-oxidobenzyl)propane-1,3-diamine]-1κ4O,N,N′,O′:2κ2O,O′;2κ2O,O′:3κ4O,N,N′,O′-bis(N,N′-dimethylformamide)-1κO,3κO-di-μ2-formato-1:2κ2O:O′;2:3κ2O:O′-trinickel(II)

Abstract

The title crystal structure, [Ni3(C19H24N2O2)2(CHO2)2(C3H7NO)2], consists of discrete centrosymmetric homo­trinuclear nickel complex mol­ecules. In each mol­ecule, the central NiII ion is in a distorted octa­hedral coordination environment, formed by four O atoms from two chelating DML2− ligands [DMLH2 = N,N′-bis­(salicyl­idene)-2,2′-dimethyl-1,3-propane­diamine] in the equatorial plane and two O atoms of two symmetry-related formate ligands in the axial positions. The terminal NiII ions also have distorted octa­hedral coordination environments and these are formed by two O and N atoms from chelating DML2− ligands in the equatorial plane; the axial positions are occupied by O atoms from a dimethyl­formamide ligand and a formate ligand. The overall result is three edge-shared octa­hedra in which the closest Ni⋯Ni distance is 3.0857 (14) A. The crystal structure is stabilized by weak C—H⋯O hydrogen bonds (agnostic interactions).