Lin, Minren; Fallis, Kathleen A.; Anderson, Gordon K., Journal of the American Chemical Society, 1992, vol. 114, # 12, p. 4687 - 4693
作者:Lin, Minren、Fallis, Kathleen A.、Anderson, Gordon K.、Rath, Nigam P.、Chiang, Michael Y.
DOI:——
日期:——
Platinum Complexes Bridged by (Diphenylphosphino)cyclopentadienyl Ligands.Reactions with tert-Butyl Isocyanide or Phosphorus Ligands
作者:Minren Lin、Kathleen A. Fallis、Gordon K. Anderson
DOI:10.1021/om00015a017
日期:1994.3
The complexes [Pt2R2(mu-C5H4PPh2)2] (1) react with 2 equiv of CNBu(t) to form the face-to-face dimers [Pt2R2(CNBU(t))2(mu-eta1-C5H4PPh2)2] (2), in which the cyclopentadienyl rings of the bridging dppc ligands are 1,2-substituted by Pt and P. Addition of further CNBu(t) produces cis- and trans-[PtR(CNBU(t))2(C5H4PPh2-P)] (3), in which the dppc ligands are coordinated through the P atom only. Reactions of [Pt2R2(mu-C6H4PPh2)2] with phosphorus ligands proceed either to form complexes of the type [PtR(PR3')2(CrH4PPh2-P) or (by reductive elimination of the appropriate alkane) to produce the platinum(I) dimers [Pt2(PR3)2(mu-eta1-C6H4PPh2)2], the course of the reaction being dependent on the nature of the ligand and the solvent. Platinum(I) species of the type [Pt2(PR3)2(mu-eta1-C5H4PPh2)2] may be prepared alternatively by displacement of carbon monoxide from [Pt2(CO)2(mu-eta1-C5H4PPh2)2]. The NMR spectra of the platinum(1) compounds are discussed.