Zero-valent triphenylphosphine platinum compounds

Hydrides of Pt(II) are the most numerous of any transition metal hydride group. In addition to the presence of the hydride ligand, the complexes invariably have a coordinated phosphine, and synthetic routes to these compounds using both hydridic and protonic reagents have been reported (I). The pure complexes are usually both air stable and kinetically inert. The purpose of this chapter is to show the diversity of hydrides that can be obtained from protonation reactions on zero-valent and di-valent triphenylphosphine platinum compounds, and to rationalize the type and nature of the product formed from the character of the acid HX. 

Tris- and tetrakis(triphenylphosphine) derivatives of zero-valent platinum can be obtained by reduction of platinum(II) triphenylphosphine compounds by alcoholic potassium hydroxide or hydrazine. The tris(triphenyl-phosphine) derivative is easily obtained from the tetrakis derivative by treatment with hot ethanol. ... 

Another route to p.-Carbido complexes which we have found is oxidative addition of Lalor s halocarbyne complexes [21] to zero valent triphenylphosphine compounds of nickel, palladium and platinum. In these reactions the heterodimetalla cyclopropenes could be isolated which isomerize at higher temperatures to the dimetalla allene complexes. The first adducts of arylcarbyne complexes to zerovalent platinum complexes (arylcarbyne as analogue of ace-... 

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See also in sourсe #XX -- [ ]

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