Synthesis, characterization and crystal structure of the heterotrimetallic complexes [NEt4][(Ph3P)2AgS2MoS2Cu(CN)](linear) and [NEt4][(Ph3P)2AgS3MoOCu(CN)](butterfly)

Abstract

Two novel heterometallic complexes with three different metals, the linear [NEt₄][(Ph₃P)₂AgS₂MoS₂Cu(CN)]1 and the butterfly-type [NEt₄][(Ph₃P)₂AgS₃MoOCu(CN)]2, have been obtained by reaction of [NEt₄]₂[MoS₄Cu(CN)] and [NEt₄]₂[OMoS₃Cu(CN)] with [Ag(PPh₃)₂]NO₃, respectively. Complex 1 crystallizes in the monoclinic space group P2₁/c with a= 10.363(4), b= 35.74(1), c= 13.136(9)Å, β= 100.89(5)°, Z= 4; R= 0.069 for 2959 observed reflections with I > 3σ(I) and 280 variables. Complex 2 crystallizes in the monoclinic space group P2₁/n with a= 20.013(6), b= 10.529(3), c= 22.721(6)Å, β= 101.31(2)°, Z= 4; R= 0.064 for 3742 observed reflections with I > 3σ(I) and 296 variables. In each synthetic procedure the fragment of the anion of the starting material, S₂MoS₂Cu(CN) or OMoS₃Cu(CN), remains almost unchanged in the product except for slight changes in bond lengths and angles. The chirality of the butterfly-type compound containing three different metals is discussed.