Study the complexes dimethyl benzoyl thiourea with some transitional elements

Abstract

This Paper includes preparation and studying of nine new complexes of some
transition metals including Cr(III), Mn(II), Fe(III), Co(II), Ni(II), Cu(II), Zn(II),
Cd(II), Hg(II) with 3,3-Di methyl-4,4-bis-[N-benzoyl thiourea]biphenyl (DBTBP) as
a bidentate ligand.
The prepared complexes have been characterized by using Infrared spectra,
Ultra violet–visible spectra, atomic absorption, elemental analysis (C.H.N), Molar
conductivity and Magnetic susceptibility. continues variations methods are used to
find structural formula and calculate the value of formation constant (kf) and finally
studying the effect of (PH) on the stability of complexes.
The preparation complexes have been found to have general structural formula
[M2L2 Cl4]. [Where M= Mn(II), Co(II), Ni(II), Zn(II), Cd(II), Hg(II)] and
[M2L2Cl4]Cl2 [Where M=Cr(III), Fe(III)] and finally [M2LCl4] [Where M=Cu(II)].