A novel mixed valence copper(I)-copper(II)-bis(antipyryl-methyl)-piperazine complex: synthesis, molecular structure and spectroscopic characterization

This paper describes a new case of the bis(antipyryl-methyl)-piperazine [BA MP] ligand being in the "boat"-conformation and acting as a tetradentate. B ut unlike in Co(BAMP)(NCS)(2), which is the only complex with BAMP acting a s tetradentate known so far, the coordinated copper(II) is connected via a iodo-bridge to a (CuI2)-I-I-moiety. The synthesis, elemental analysis, spec troscopic (far- and mid-FTIR, UV-Vis) and structural characterization (X-ra y diffraction) as well as magnetochemical and conductivity data of this nov el mixed valence binuclear complex (CuCuII)-Cu-I(BAMP)I-3 are presented. (C ) 2000 Elsevier Science B.V. All rights reserved.