作者:Penny A. Chaloner、Gillian T. L. Broadwood-Strong
DOI:10.1039/dt9960001039
日期:——
Reaction of [Pt(C2H4)(PR3)2](R = Ph or C6H4Me-4) with moderately bulky phosphines at low temperatures did not give the expected tris- or tetrakis-phosphine complexes. Instead, mixed-phosphine complexes of the type [Pt(C2H4)(PR3)(PR′3)](R′= C6H11, C6H4OMe-4, C6H4OMe-2, C6H4Me-4 or CH2Ph) were formed. With less bulky phosphines, chelating diphosphines or phosphites, mixed tetrakis complexes, many of them prone to disproportionation, were formed. The complexes were characterised by 31P and 195Pt NMR spectroscopy in solution.
在低温下,[Pt(C2H4)(PR3)2](R = Ph或C6H4Me-4)与中等体积的膦反应并未生成预期的三膦或四膦配合物。相反,形成了类型为[Pt(C2H4)(PR3)(PR′3)]的混合膦配合物(R′= C6H11, C6H4OMe-4, C6H4OMe-2, C6H4Me-4或CH2Ph)。与体积较小的膦反应时,形成了配位的二膦或磷酸酯的混合四膦配合物,其中许多配合物易于发生不均匀化。该配合物通过31P和195Pt NMR光谱在溶液中进行了表征。