Synthesis and characterization of complex combinations of Cu(II), Ni(II), Pt(II), Pd(II), Hg(II) and Cd(II) with N-benzoil-N '-2,4-dimethylphenilthiourea

The N-benzoyl-N'-2,4-dimethylphenylthiourea ligand (L) has been used to pre pare Cu(ll), Ni(II), Pt(II), Pd(ll), Cd(ll) and Hg(II) complexes. The novel complexes were characterized by EPR, IR and electronic spectroscopy. Tenta tive geometry of the complexes involves four-coordinate environments, squar e-planar (D-4h) for Cu(ll), Ni(II), Pt(ll), Pd(II) and tetrahedral (Td) for Cd(ll) and Hg(ll) complexes. in these complexes the ligand coordinates in various ways: in the [M(L-2)Cl-2]type complexes (where M = Pl(II) and Hg(Il ), the ligand acts as monodentate, being S-bonded to the metal ion and in t he [M(L-H2)] type complexes (where M=Cu(ll), Ni(ll), Pd(II), Cd(ll) the lig and is S,O bonded to the metal ion.