SYNTHESES, CHARACTERIZATION AND STUDY OF THE PROPERTIES OF HETEROBIMETALLIC COMPOUNDS CONTAINING FERROCENYL UNITS - X-RAY CRYSTAL-STRUCTUREOF - 5H5)FE[(ETA(5)-C5H4)-CH=N-CH2-CH2-N(CH3)(2)])CL-2]

The synthesis, characterization and study of the new ferrocenyl Schiff [(5-C5H5)Fe{(eta(5)-C5H4)-CH=N-CH2-CH2-N(CH3)(2)}] (1) is reported. T his substrate reacts with Na-2[PdCl4] or with transition metal dichlor ides MCl2.nH(2)O (with M = Zn, Ni, Co or Cu) giving the corresponding coordination compounds: [M{(eta(5)-C5H5)Fe[(eta(5)-C H-5(4))-CH=N-CH2- CH2-N(CH3)(2)]}Cl-2] {with M = Pd (2), Zn (3), Ni (4), Co (5), and Cu (6)). These heterobimetallic compounds have been characterized by infr ared and W-visible spectroscopies. NMR-spectroscopic studies on the di amagnetic derivatives (1-3) together with magnetochemical studies on t he paramagnetic species (4-6) are also reported. Crystals of complex 3 have also been characterized by X-nay diffraction: orthorhombic, spac e group Pcab, with a = 12.225(1) Angstrom; b = 14.685(1) Angstrom; c = 19.474(1) Angstrom, and V = 3498.4(4) Angstrom(3). Electrochemical st udies, based on cyclic voltammetry, for all the compounds have allowed us to establish the influence of the central atom M(II) upon the redo x ability of the Fe(II). (C) 1997 Elsevier Science S.A.