The reaction between cis-bis(trifluoroacetato)bis(trioganophosphine)platinum(II) and tetraorganotin compounds

Abstract

The complex cis-[Pt(O₂CCF₃)₂L₂](L = PMe₂Ph) reacts with SnRMe₃ compounds (R = aryl) to give trans-[PtR(O₂CCF₃)L₂] and cis-[PtR₂L₂], except for the sterically hindered mesityltrimethyltin which gives mainly trans-[PtMe(O₂CCF₃)L₂]. The latter is also the main product from SnMe₃(CH₂Ph). For L = PPh₃, SnMe₃Ph, and SnMe₃(C₆H₄Me-p) give mainly cis-[PtMe(O₂CCF₃)L₂]. For L = PMe₂Ph, SnMe₄ gives only trans-[PtMe(O₂CCF₃)L₂], but, for L = PPh₃, cis-[PtMe₂L₂] is also formed. The most reactive tin compound used, trimethyl(2-thienyl)tin, readily reacts with cis-[Pt(O₂CCF₃)L₂](L = PMe₂Ph or PEt₂Ph) or [Pt(cod)(O₂CCF₃)₂] to give exclusively cis-[Pt(C₄H₃S-2)₂L₂] or [Pt(cod)(C₄H₃S-2)₂]. ³¹P-{¹H} N.m.r. parameters are given.