Bis{(μ-acetato)[μ-bis(salicylidene)-1,3-propanediaminato](dimethyl sulfoxide)nickel(II)}nickel(II)

The coordination around the nickel ions in the title complex, [Ni₃(C₁₇H₁₆N₂O₂)₂(C₂H₃O₂)₂{(CH₃)₂SO}₂], is irregular octahedral. The central nickel ion occupying the inversion centre has four O atoms from two N,N'-bis(salicylidene)-1,3-propanediaminato (SALPD²⁻) ligands and one O atom from each bridging acetate group. The average Ni—O distance for the central Ni ion is 2.072 (2) Å. The coordination around the terminal Ni ions, related by an inversion centre, comprises two O atoms and two N atoms from a SALPD²⁻ ligand as well as one O_acetate and one O_DMSO atom. The DMSO and acetate ligands are trans about the terminal Ni atom. The average Ni—O and Ni—N distances for the terminal Ni ions are 2.087 (2) and 2.018 (3) Å, respectively. The Ni...Ni bridging distance is 3.043 (2) Å.

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