Titanium(IV) and Zirconium(IV) Dithiocarbamates

Mono-, bis-, tris- and tetrakis-dithiocarbamato derivatives of titanium(IV) and zirconium(IV) tetrachlorides of the type M(S2CNRR1)n Cl4-n(n = 1–4, R = C2H5, R1 = C6H4CH3; R = H, R1 = C5H9 or C7H13) have been prepared in refluxing dichloromethane. These complexes have been characterized on the basis of elemental analyses, molecular weight determinations, conductance measurements, magnetic moment data, and spectral (i.r., electronic and proton magnetic resonance) studies. Dithiocarbamate ligands are bidentate in nature in these complexes. Five-, six-, seven- and eight-coordination numbers are reported for titanium(IV) and zirconium(IV) in their mono-, bis-, tris- and tetrakis-dithiocarbamato complexes, respectively.