Gold complexes, oxidative addition reactions

Organometallic complexes of copper, silver, and gold are ideal precursors for carbene complexes along with some C- and N-coordinated species. Their reactivity pattern, in particular in oxidative addition reactions, was the most comprehensively studied. 

Oxidative-Addition Reactions to the Dinuclear Gold(l) Amidinate Complex 9... 

The gold(II) compounds without Au-Au bonds are in general prepared by reduction of Au . There are several dinuclear gold(II) complexes with Au-Au bonds. They are obtained from the corresponding gold(I) complexes by oxidative addition reactions as shown in Scheme (2). In a special case, both the Au -Au and Au products were isolated. ... 

Dyadchenko has reviewed oxidative addition and reductive elimination reactions of gold complexes. Some transalkylation reactions of mercury compounds which are Se (oxidative) are mentioned in Section 11.2.10. 

A related dinuclear species 77, recently described, constitutes the first dinuclear gold(I) complex with heterobridged phosphor-1,1 -dithiolato moieties and bis(ylide) bridging ligands [ 102]. It is obtained by reaction between [ AuS2PPh2] and the diylide gold complex 74 (R=Me). No intermolecular Au-Au interaction is observed in 77 but the oxidative addition of chlorine to the product leads to a new complex 78 in which a single bond is formed between the two Au(II) centers (Scheme 26). 

The reaction of the dinuclear gold(I) amidinate complex, [Au2(2,6-Me2Ph-form)2], with Hg(CN)2 (1 2 stoichiometry) in THF forms a 2D coordination polymer, [Au2(2,6-Me2Ph-form)2]-2Hg(CN)2 2THF, not the expected oxidative-addition product of the type formed vdth the ylides. White crystals and a yellow powder are formed. 

Abdou, H.E., Mohamed, A.A. and Fackler, J.P. Jr (2004) Oxidative addition of methyl iodide to dinuclear Gold(I) amidinate complex schmidbaur s breakthrough reaction revisited with amidinates. ZeitschriJiJurNaturforschungB. A Journal of Chemical Sciences, 59, 1480-1482. 

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