Reactions of some d8 metal complexes.

A brief review of the oxidative addition reactions of square planar d8 complexes is presented. The reaction of some carboxylate complexes of platinum, Pt(OCOR)2L2 in both alcoholic and aprotic media, with acids, unsaturated molecules and organo-halo compounds are reported. New platinum complexes have been isolated and characterised. Some related reactions of cis - dichloro bis(triphenyl-phosphine) platinum(II) have been investigated. The oxidative addition of o - quinones to complexes of the platinum metals in low oxidation state have been investigated. New complexes containing the metal - 1,2 - dioxylene system have been isolated and characterised. The reaction of some acetylacetonato rhodium complexes of the type Rh(acac)L2, unsaturated molecules and organohalo compounds have been investigated. New rhodium complexes have been isolated and characterised including a novel complex in which the rhodium acetylacetonate system has undergone a 1,4 - addition reaction with hexafluorobut -2- yne.