Several complex salts of the general formula [M(II) (bipy)x(H2O)y]PbCl6 (where x=2–3, y=0–2 and M=Mn(II), Fe(II), Ni(II), Co(II), Cu(II), Zn(II), Cd(II) and Hg(II)) were synthesized and investigated
by DTA, TG and DTG. Some of the decomposition products were identified by IR spectroscopy and other methods. The compounds
decompose with the liberation of water (in the case of hydrates), chlorine (sometimes causing chlorination of organic fragments),
organic molecules (sometimes chlorinated) and sometimes hydrogen chloride. The residues comprise metal(II) chlorides and PbCl2.