Selenido-containing clusters

CO2MC] were obtained by metal exchange liom (he same ruthenium-dicobalt precursor and analogous functionalized (cyclopentadienyl)metal carbonyl Related reactions of the selenido-containing cluster RuCo2(/r rSe)... 

Again, clusters containing exclusively Cu, as well as compounds with mixed-valence metal centers, can be found. In contrast to the compounds presented in Schemes 3.3 and 3.4, one example of a selenido-selenolato-bridged cluster exists apparently containing Cu and Cu . Apart from this peculiarity, the cluster size and conformation of the Se -SeR-bridged compounds is now not only influenced by the nature and steric demand of the phosphine used, but it is also dependent on the spatial properties of the organic substituent at the selenium reactant This deter-... 

RuWGo and RuWNi clusters that contain sulfido and selenido " ligands. Their chemical properties bear a close resemblance to those of the molybdenum analogs. Other Ru-W selenido clusters " or oxo clusters are also known. 

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