New Copper and Oxomolybdate Robson-Type Polynuclear Macrocyclic Complexes: Structure,Spectroscopy,and Electrochemical Properties

The polynuclear complexes [mo3o8(tidf)]·dmso·2h2o (1) and [{cu2(tidf)}2(-mo8o24)] (2) (tidf2- is a symmetrical tetraiminodiphenolate robson-type macrocyclic ligand) were prepared from equimolar combinations of [mg2(tidf)](no3)2·4h2o,[moo2cl2(dmso)2] (for 1) and complex 1 and cu(clo4)2·4h2o (for 2) in acetonitrile. molecular structures of both complexes were determined and showed atypical modes of coordination. a significant observation was the remarkable flexibility of the macrocycle ligand that effectively accommodated the steric demands of metal cations and the packing forces and showed a unique mode of coordination. spectroscopic (uv-vis and ftir) and redox properties are discussed. © 2015 marcelo carpes nunes et al.