Phosphine complexes of platinum and

Tertiary phosphine complexes of platinum and palladium M(PR3)2X2 are important [95]. The cis- and trans- somers are readily obtained for platinum,... 

It is possible to distinguish between phosphine complexes of platinum and rhodium by phosphorus-31 NMR spectroscopy, a technique not available to the early coordination chemists. Given that phosphorus-31 (100% abundant), platinum-195 (33% abundant), and rhodium-103 (100% abundant) all have nuclear spin quantum numbers of 1/2, sketch 31P NMR spectra of the following complexes (assume all protons are decoupled from the phosphorus nuclei) ... 

Hoye, P.A.T., Pringle, P.G., Smith, M.B., and Worboys, K., Hydrophosphination of formaldehyde catalyzed by tris(hydroxymethyl)phosphine complexes of platinum, /. Chem. Soc., Dalton Trans., 269, 1993. 

Nucleophihc attack of methoxide ion on olefinic and acetylenic groups of suitable unsaturated phosphine complexes of platinum(II) takes place to give cyclic, a-bonded complexes. This reaction appears to occur whether or not the unsaturated group is coordinated to the metal (22). But-3-enyl diphenylphosphine forms a chelate complex with platinum(II) chloride which on treatment with sodium hydrogen car-... 

The effect of having bulky groups (e.g., /-butyl) in the phosphine ligand of platinum and palladium complexes has been studied in some detail by Shaw and his co-workers (9-12, 30, 31, 88). They have used a number of phosphines containing aromatic groups, e.g., di-/-butylphen-ylphosphine intramolecular ring closure occurs with the elimination of HC1 (9, 10), e.g.,... 

Beaulieu, W.B., Rauchfuss. T. and Roundhill, D.M. (1975) Interconversion reactions between substituted phosphinous acid-phosphinito complexes of platinum([[) and their capping reactions with boron trifluoride-diethyl etherate. Inorg. Chem., 14, 1732-1734. 

A wide range of alkyl- and aryl-hydroxo-bis(tertiary phosphine) complexes of platinum(II) has been prepared now (17, 18, 19, 20, 21), generally by the route shown in Equation 4 or some variant of it... 

C,P-Coordination is also observed in a series of bi- and trinuclear diphenyldi-phosphine complexes containing platinum and palladium [698a], Some representatives of complexes with C,Te-coordinated ligands have also been described [634]. 

The coordinative reactivity of phosphine complexes of platinum(O), palladium(O) and nickel(O) Reversible activation of covalent molecules by transition metal complexes. The role of the covalent molecule... 

Complexes of other metals are used to sensitize emulsions, and some are used to sensitize even further (supersensitize) gold-sensitized emulsions. " Among these are (NH4)2[PtCl4], (NH4)2[PdCl4], (NH4)2[PdCy, K2[IrCl6] and similar compounds with ruthenium and the other halides. Sensitization by iridium salts and complex ions has been reviewed recently. Mechanisms of action of palladium(II) salts and complex ions on gold-sensitized emulsions have been studied. Several phosphine complexes of palladium and platinum, for example (2), are reported to be effective sensitizers, as are many macrocyclic polyamine compounds and their metal complexes,for example the Cu", Ni", Fe " and Rh " chelates of the cyclen ligand, 1,4,7,10-tetraazacyclododecane (3). 

Phosphine complexes of platinum, palladium, and nickel also react in a similar manner ... 

Asymmetric hydrosilylation of prochiral olefins, e.g. 1,1-disubstituted olefins, catalyzed by chiral phosphine complexes of platinum(II) [21], nickel(II) [22], and palladium(II) [23] has been reported. When a platinum complex of the type [L PtCl2]2, where L stands for (/ )-benzylmethylphenylphosphine (BMPP), was used as catalyst, methyldichlorosilane, but not trichlorosilane, reacted satisfactorily- with a-methylstyrene, 2,3-dimethyl-l-butene, and 2-methyl-l-butene to give the corresponding optically active addition products, RMeC HCH2SiMeCl2, R = Ph, /-Pr,... 

Orpen AG, Pringle PG, Smith MB, Worboys K (1998) Synthesis and properties of new tris(cyanoethyl)phosphine complexes of platinum (0,11), palladium (0,11), iridium (I) and rhodium (I) conformational analysis of tris(cyanoethyl)phosphine ligands. J Organomet Chem 550 255-266... 

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