Syntheses and Spectroscopic Characterization on New [O–3-phenyl-1-propyl-(4-methoxyphenyl)dithiophosphonato] Ni(II), Cd(II) and Hg(II) Complexes

In this study, four new dithiophosphonic acid complexes, namely, trans- bis-[ O– 3-phenyl-1-prop yl- (4-methoxyphenyl) dithiophosphonato ] nickel (II), {Bis-pyridine-bis-(O–3–phenylpropyl (4-methoxyphenyl) dithiophosphonato ]} nickel (II), bis-{bis-( O– 3-phenyl-1-prop yl- (4-methoxyphenyl) dithiophosphonato ] cadmium (II)} and bis - { bis - ( O– 3 - phenyl – 1 - prop yl- ( 4-methoxyphenyl ) dithiophosphonato ] mercury (II)} were syntheszed. The complexes were of the general structure [Ni(L) 2 ] and [M(µ-L) 2 (L) 2 ], M= Cd 2+ and Hg 2+ . The nickel(II) complex was capable of coordinating two moles of pyridine per mole as many four-coordinated nickel(II) complex do leading to the six-coordinated complex, [Ni(L) 2 (Py) 2 ]. All the compounds were characterized by elemental analysis; MS; FTIR and Raman spectroscopies. The [ Ni( L ) 2 ], [Cd(µ-L) 2 (L) 2 ] and [Hg(µ-L) 2 (L) 2 ] were also investigated by 1 H-, 13 C- and 31 P-NMR. The magnetic susceptibility of the pyridine nickel complex was measured to confirm the hybridization patterns and the geometry.