A Novel Dinuclear Nickel(II) Complex with Three Bridges of Cl-, OAc- and (-OCH2CH2O-) Group of N, N, N′, N′-Tetrakis(2-benzimidazolyl methyl-1, 4-di-ethylene amino) Glycol Ether

Abstract

The novel dinuclear Ni2+ complex [Ni2(μ-Cl)(μ-OAc) (EGTB)]·Cl·ClO4·2CH3OH, where EGTB is N, N, N′, N′-tetrakis (2-benzimidazolyl methyl-1, 4-di-ethylene amino)glycol ether, crystallizes in the orthorhombic space group Pnma with a = 15.272(2), b = 14.768(2), c = 22.486(3) Å, V = 5071.4(12) Å3, Z = 4, Dcalc = 1.414 g cm−3, and is bridged by triply bridging agents of a chloride ion, an acetate and an intra-ligand (-OCH2CH2O-) group. The nickel coordination geometry is that of a slightly distorted octahedron with a NiN3O2Cl arrangement of the ligand donor atoms. The Ni–Cl distance is 2.361(2) Å, and two Ni–O distances are 1.996(5) and 2.279(6) Å. The three Ni–N distances are 2.033(7), 2.060(6), and 2.166(6) Å with the Ni–N bond trans to an ether oxygen the shortest, the Ni–N bond trans to an acetate oxygen the middle and the Ni–N bond trans to Cl the longest.