Abstract
Triarylstannanes SnHR 3 react with the platinum (0) complexes [PtL 4] [L P(OR′) 3,R′ Ph, C 6H 4Me-3 or -4] and [Pt(PPh 3)L 3] [L P(OC 6H 4Me-3) 3] to give rans-[Pt(SnR 3) 2L 2], with the oxalato-platinum(II) complexes [Pt(C 2O 4)LL′] [L L′ P(OPh) 3; L PMe 2Ph, L′ P(OPh) 3; L PET 3, L′ P(OPh) 3] to give rans-[Pt(SnR 3) 2LL′], with [Pt(CO 3)(BIPY)] (BIPY 2,2′-bipyridyl) to give stable platinum(IV) complexes cis-trans-[PtH 2(SnR 3) 2-(BIPY)], with [PtMe 2(BIPY)] to give cis-trans-[PtH(Me)(SnR 3) 2(BIPY)], and with cis-[PtMe 2(PMe 2Ph) 2] to give rans-[Pt(SnR 3) 2(PMe 2Ph) 2] or [PtH(Me)(SnR 3) 2(PMe 2Ph) 2], and with cis-[PtMe 2(PY)(PPh 3] (PY pyridine) to give rans-[Pt(SnPH 3) 2(PPh 3)(PY)]. The results indicate that the stability of the platinum(IV) complexes increases with the ‘hardness’ of the bases L: P(OR) 3 < phosphines < BIPY. The reaction mixtures of SnHPh 3, and [PtMe 2(BIPY)] or [PtMe 2(PMe 2Ph) 2] catalyse homogeneously the formation of Sn 2Ph 6. The starting complexes and product complexes were characterised by elemental analysis, IR, 1H AND 31P-{ 1H} NMR spectroscopy.
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