A linear trinuclear NiII-MnII-NiII complex with a μ-acetato bridge: Bis{(μ-acetato)[μ-bis(salicylidene)-1,3-propanediaminato](N,N- dimethylformamide)nickel(II)}manganese(II)

Ercan F., Atakol O.

Acta Crystallographica Section C: Crystal Structure Communications, cilt.54, sa.9, ss.1268-1270, 1998 (SCI-Expanded) identifier identifier

Özet

The structure of the title compound, [Mn{Ni(C2H3O2)-(C3H 7NO)(C17H16N2O2)} 2], consists of a linear heterotrinuclear unit with a central MnII ion. Both the terminal NiII ions and the central MnII ion have irregular octahedral coordinations. The central MnII ion is located on the inversion centre. Each pair of metal ions is triply bridged via O atoms from the N,N′-bis(salicylidene)-1,3-propanediaminato (SALPD2-) ligands and from the acetate groups. The coordination around the MnII ion consists of four O atoms from two SALPD2- ligands, and one O atom from each of two acetate ligands. The coordination of each terminal NiII ion is provided by the two O and two N atoms from a SALPD2- ligand, and by one O atom each from a bridging acetate and a dimethylformamide (dmf) ligand. The dmf and acetate ligands are trans about the terminal NiII ion. The average Ni-O and Ni-N distances for the terminal ions are 2.071 (2) and 2.026 (2) A, respectively. The Ni⋯Mn distance is 3.133 (2) Å.