Synthesis, characterization and thermostability of IIB group transition metal complexes with dithiocarbamate

A series of IIB group metal Zn(II), Cd(II) complexes with dithiocarbamate (dtc) ligand (HOCH₂ CH₂)₂dtc have been synthesized in methanol solution. All the complexes M[(HOCH₂ CH₂)₂dtc]₂L [M=Zn (1), Cd (2); L=2,2'-bipyridyl; M=Zn (3), Cd (4), L=1,10-phenanthroline] were characterized by IR spectra, elemental analysis and TGA. The TGA results show that all the final thermolysis residues of the above complexes are their respective metal oxides. Compounds 1 and 2 were also determined by single crystal X-ray diffraction analysis. The complex 1 crystallizes in a monoclinic system with space group P2₁/c and parameters a=0.72146(5) nm, b=2.61720(18) nm, c=1.59438(11) nm, β=97.899(2)°, V=2.9820(4) nm³, Z=4, μ=1.133 mm^-1, D_c=1.297 Mg·m^-3. The complex 2 crystallizes in a triclinic system with space group P-1, and parameters a=1.0075(2) nm, b=1.1580(2) nm, c=1.1777(2) nm, α=70.92(3)°, β= 85.71(3)°, γ=81.02(3)°, V=1.2822(4) nm³, Z=2, μ=2.118 mm^-1, D_c=1.630 Mg·m^-3.