Unsymmetrical Platinum(II) Complexes with Diphosphine Ligands

Abstract

Abstract In this study, unsymmetrical dipositive platinum(II) complexes of the general formula [Pt(L-L)(L′-L′)]Br2, where L-L and L′-L′ = dppm (Ph2PCH2PPh2), dppe (Ph2P(CH2)2PPh2) or dppp (Ph2P(CH2)3PPh2) have been synthesized and characterized by 31P[1H] NMR, IR, UV-Vis, elemental analyses and conductance data. Chlorine analogs of these complexes have also been prepared in the NMR tube and their 31P[1H] NMR spectra were recorded. In a similar manner, [PtBr2(dcpe)] (dcpe = Cy2P(CH2)2PCy2; Cy = cyclohexyl (C6H11)) has been treated with dppm and dppe to form [Pt(dcpe)(dppm)]Br2 and [Pt(dcpe)(dppe)]Br2, respectively.