REACTIONS OF DIPHOSPHINEPLATINUM(II) OXALATE COMPLEXES WITH PHENYLACETYLENE. FORMATION OF PHENYLALKYNYLPLATINUM COMPLEXES

Article abstract of DOI:10.1016/0022-328X(85)80277-1

reacts thermally with PhC<*>CH to produce CPh)2(dppe)>, which has been prepared by alternative routes.Similar treatment of initially produces CPh)2(dpmm)>, which rearranges to give cis,cis-CPh)4(μ-dppm)2>.Reaction of with PhC<*>CH/KOH/18-crown-6, or with (PhC<*>C)SnMe3, gives CPh)2(dpmm)>, which may be converted to the cis,cis-dimer by addition of oxalic acid.Ultraviolet irradiation or refluxing with a trace amount of dppm converts CPh)2(dppm)> to trans,trans-CPh)4(μ-dppm)2>, but the cis,cis-dimer is stable under these conditions. (L = PPh3, PEt3) complexes also react thermally with PhC<*>CH to yield CPh)2L2> species.