Synthesis, Characterization and Reactivity of New Hetero-Bimetallic Complexes

Heterobimetallic complexes of the type [Cu(TETA) C12MCl2] where M = Si, Ge, Sn, Ti or Zr, TETA-H2 = (triethylene tetramine) have been synthesized and characterized by elemental analysis, EPR spectra, electronic spectra, IR spectra, far-IR spectra and conductivity measurements. The complex [Cu(TETA)Cl2 SnPh2] has also been prepared. The results indicate that the compound [Cu(TETA-H2)]Cl2 is square planar and ionic in nature, while its bimetallic complexes, [Cu(TETA)Cl MCl2] and [Cu(TETA)Cl2SnPh2], have an octahedral environment around the Cu(II) ion. Another series of compounds of the type [Cu(TETA)C12M(TMDTC)2] has been prepared by the direct interaction of [Cu(TETA)Cl MCl2] with tetramethylenedithiocarbamate (TMDTC) in a 1:2 ratio in methanol. In these complexes, an octahedral stereochemistry around the Group IV metal has been observed in which the TMDTC acts as a bidentate ligand.