Synthesis, Characterization and Electrochemistry of Heterobimetallic Complexes Containing Molybdenum(ii) Nitrosyl and Manganese(ii)-schiff Base Centers

Abstract

New complexes derived from the reaction of Mo(NO)T p * Cl 2 ; T p * = tris(3,5-dimethylpyrazolyl) borate with a series of manganese(II) Schiff bases have been synthesized. Characterization by UV, IR, MS and elemental analysis support their formulations. Cycl ic and differential pulse voltammograms of manganes e(II) Schiff base monometallic complexes exhibit one redu ction peak which may be associated with the reducti on of the manganese(II) center. In CH 3 CN solutions, the molybdenum(II)-manganese(II) bime tallic complexes showed two reversible reduction peaks which are associated with the reduction of the molybdenum and manganese centers. In CH 2 Cl 2 , only the reduction of molybdenum(II) center exhib ited reversibility while the reduction of manganese(II) center was irreversible. These observ ations demonstrate that reduction potentials for bi metallic complexes are solvent dependent.