B. Mahapatra, B.; Choudhury, S. Polymetallic Complexes-Part XXIX: Complexes of Cobalt(II), Nickel(II), Copper(II), Zinc(II), Cadmium(II)and Mercury(II) With Chelating ON-NO Donor Azo Dye Ligands . ajc 2010, 4, 376-380.