Synthesis and Spectroscopic Characterization of New Organolead(Iv) Complexes Containing Organophosphorus Ligands

Abstract

Organolead(IV) derivatives of organophosphorus ligands, R_nPb[(OPPh₂)(SPPh₂)N]_4-n (R = Ph; n = 2, 3) and Me₃Pb[S₂PR₂] (X = S, O; R = Me, Et, Ph), were prepared by reacting the corresponding organolead(IV) chloride with the sodium, potassium or ammonium salt of the appropriate organophosphoric acid. The title compounds were investigated by IR and multinuclear (¹H, ¹³C, ³¹P) NMR spectroscopy, and possible structures are proposed. All dithiophosphinato complexes exhibited low stability and underwent decomposition on standing. The decomposition process was monitored by using ¹H and ³¹P NMR spectroscopy, and a decomposition pathway is proposed.