Abstract

The reaction between Ru(C≡CC≡CAg)(dppe)Cp* and tcne affords a novel percyanovinylidene complex by an unusual decyano-dimerization reaction of the cyanocarbon with the diynyl fragment. This complex is also obtained from tcne and Ru{C≡CC≡C[Au(PPh3)]}(dppe)Cp*, together with Ru{C≡CC[═C(CN)2]C[Au(PPh3)]═C(CN)2}(dppe)Cp*, formed by the anticipated [2 + 2] cycloaddition and subsequent ring-opening reactions.

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