The one-dimensional chain structure of [Cu(en)2Pt(CN)4] (en is ethylenediamine)

Abstract

The title compound, catena-poly[di-μ-cyano-1:2κ2 C:N;1:2′κ2 C:N-dicyano-1-κ2 C-bis(ethylenediamine-2κ2 N,N′)platinum(II)copper(II)], [CuPt(CN)4(C2H8N2)2] n , (I), consists of one-dimensional chains running along the [111] direction. Both Cu and Pt atoms are located on centres of symmetry in an alternating array of [Cu(en)2]2+ (en is ethylenediamine) and [Pt(CN)4]2− units. The Pt—C coordination bond distances of 1.985 (4) and 1.995 (4) Å are longer than those of an analogous NiII complex. Moreover, due to Jahn–Teller distortion, the axial Cu—N bond distance of 2.562 (5) Å is longer than the equatorial ones of 2.014 (4) and 2.017 (4) Å.