Platinum(II) halide complexes of PPh2(CFdouble bond; length as m-dashCF2) and PPh2(CCldouble bond; length as m-dashCF2). The synthesis and crystal structure of [PtI(μ-I){PPh2(CXdouble bond; length as m-dashCF2)}]2, (X = F, Cl); the first crystallographica

The reactions of the fluorovinyl-substituted phosphines PPh2(CFdouble bond; length as m-dashCF2) and PPh2(CCldouble bond; length as m-dashCF2), with K2PtX4 (X = Br, I) have been investigated. The resulting complexes have been characterized by a combination of 19F and 31P{1H} NMR, IR and Raman spectroscopy. The reactions of these phosphines with K2PtBr4 yield the monomeric complexes cis-[PtBr2{PPh2(CFdouble bond; length as m-dashCF2)}2] (1) and trans-[PtBr2{PPh2(CCldouble bond; length as m-dashCF2)}2] (2), respectively, whilst the reactions with K2PtI4 yield both the monomeric species trans-[PtI2{PPh2(CXdouble bond; length as m-dashCF2)}2], {X = F (3), Cl (4)}, and the dimeric species [PtI(μ-I){PPh2(CXdouble bond; length as m-dashCF2)}]2, {X = F (5), Cl (6)}. The dimers 5 and 6 represent the first crystallographically characterised platinum(II) iodide-bridged phosphine complexes, and both adopt the symmetric-trans structure.