Structural analysis of bis{(N,N′–dimethylformamide) (μ-formato)[μ-bis(salicylidene)–1,3-propanediaminato] nickel(II)} copper(II) and zinc(II) monohydrate hetero-trinuclear complexes

The two linear hetero-trinuclear metallic complexes with Cu 2 + , Ni 2 + and Zn 2 + ions, [CuNi 2 {(CHO 2 )(SALPD)[(CH 3 ) 2 NCHO]} 2 ],(I) and [ZnNi 2 {(CHO 2 )(SALPD)[(CH 3 ) 2 NCHO]} 2 ],(II), form crystals which belong to the monoclinic system, space group P2 1 /c, with unit cell dimensions a=10.537(4), b=16.612(5), c=13.837(3) A, β=111.09(5)°, V=2259.8(12) A 3 in (I) and a=10.525(4), b=16.658(5), c=13.826(3) A, β=111.11(5)°, V=2261.4(8) A 3 in (II), respectively. The coordinations around the M (Ni 2 + , Cu 2 + , Zn 2 + ) ions in the title complexes are distorted octahedrals. The stereochemistries of the bridge ligands, linking to the metal ions each other, are changed between Ni...M (Cu 2 + , Zn 2 + ) distances. The Ni...M (Cu 2 + , Zn 2 + ) distances are 3.0469(13) and 3.0645(14), respectively.