Experimental and theoretical study of the reactivity of cluster-bound dicarbon: synthesis and structures of novel electron-rich Ru5 clusters
Abstract
An EHMO (extended Hückel molecular orbital) study of [Ru5(µ5-C2)(µ-SH)2(µ-PH2)2(CO)11] suggests that Cβ should behave as a nucleophile; this is found experimentally in the reactions of the SMe–PPh2 derivative with H2 or C2H4, in which Cβ inserts into H–H or C–H bonds to give µ3-CCHR ligands (R = H or CH![[double bond, length half m-dash]](https://www.rsc.org/images/entities/char_e006.gif)
CH2, respectively), as shown by X-ray structure determinations carried out on [Ru5(µ-CCHR)(µ3-SMe)2(µ-PPh2)2(CO)10](R - H and CHCH2).
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