Dinuclear gold® complexes moieties

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 group of Iglesias, Sdnchez, and Corma described two biscarbene dinuclear gold(I) complexes where the chirality resides in a dioxolane bridge that links two carbene moieties (Scheme 3.76) [106,107]. These NHC-gold(I) complexes 118... 

Figure 7.7 Dinuclear gold(l) complexes bearing cyclophane and noncyclophane moieties.

Another type of potential pincer ligand with an anionic central moiety has been proposed by Poethig and Strassner. The ligands have the structure displayed in 12 and feature an anionic triazinone central moiety. Such moiety is actually a very weak electron donor hence, these ligands have not been employed up to now to prepare pincer complexes, but rather dinuclear complexes of silver(I) and gold(I), in which the central triazinone moiety remains uncoordinated. The resulting complexes are emissive in the sofid state and are neutral, which facifitates their dispersion into, e.g., polymer films for photophysical appHcations. 

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