MONONUCLEAR (Pd, Pt) AND BINUCLEAR (Pd,Pd; Pd,Ag; Pt,Ag) COMPLEXES CONTAINING THE BIS(DIPHENYLPHOSPHINO)AMINE LIGAND

Article abstract of DOI:10.1016/0022-328X(86)80156-5

By appropriate choice of precursors and solvent, complexes of the type M(C6X5)2(dppa)2 or M(C6X5)2(dppa) (M = Pd, Pt; X = F, Cl; dppa = Ph2PNHPPh2) can be prepared.Reaction of trans-M(C6F5)2(dppa)2 with AgClO4 gives hetero-binuclear complexes of the type <(C6F5)2M(μ-dppa)2Ag>ClO4.Addition of dppa to the perchlorato complexes Pd(OClO3)(C6F5)L2 (L = PR3) gives the cationic singly-bridged homo-binuclear species <(Pd(C6F5)L2)2(μ-dppa)>(ClO4)2.The binuclear Pd^I complex <(Pd(C6F5))2(μ-dppa)2> has been obtained from the reaction between Pd(C6F5)2(dppa)2 and Pd2(dba)3*CHCl3 and its insertion reactions have been studied.The dppa ligand acts as monodentate, bidentate-chelate or bidentate-bridging ligand depending on the precursors, the solvent, and the reaction conditions.