Cyclohexylethyl- and hexamethyleneimine nickel(III)dithiocarbamates with 1,6-bis(diphenylphosphino)hexane

A binuclear diamagnetic Ni(II) dithiocarbamates with 1,6-bis(diphenylphosphino)hexane (dpph) as a bidentate bridging P,P-ligand of composition [Ni 2 (μ-dpph)(hmidtc) 2 X 2 ] (hmidtc = hexamethyleneiminedithiocarbamate, dtc =S 2 CN - , X = Cl, Br, I, ClO 4 , NCS); [Ni 2 (μ-dpph)(cetdtc) 2 X 2 ] (cetdtc = cyclohexylethyldithiocarbamate, X = Cl, Br, I, NCS) and also the mononuclear diamagnetic complex [Ni(cetdtc)(dpph)]ClO 4 .2H 2 O have been synthesized. The complexes have been studied by elemental analysis, IR and UV-VIS spectroscopy, thermal analysis, magnetochemical and conductivity measurements. X-ray structural analysis was solved for the [Ni 2 (μ-dpph)(hmidtc) 2 Br 2 ].2CHCl 3 and confirmed the presence of two NiS 2 PBr chromophores bonded by the P-donor atoms of 1,6-bis(diphenylphosphino)hexane.