Acetylenedicobalt hexacarbonyl

Seyferth and coworkers [181] introduced ethynyl groups onto the periphery of carbosilane dendrimers by displacement of chloride from the terminal silicon groups. They further treated these ethynyl terminated silicon dendrimers with Co2(CO)8 to afford the corresponding acetylenedicobalt hexacarbonyl dendritic complexes. 

The acetylenedicobalt hexacarbonyls have been described in terms of... 

H. Jobic, C.C. Santini C. Coulombeau (1991). Inorg. Chem., 30, 3088-3090. Vibrational modes of acetylenedicobalt hexacarbonyl studied by neutron spectroscopy. 

Moreover, the decomposition ofC H3C=Cr(CO)4Br in the presence of dicobalt octacarbonyl resulted in interception of CH3 C to give CH3CC03-(CO)9 (Fischer and Daweritz, 1975). In this context, it is then not surprising that the decomposition of RCC03 ( 0)9 compounds gives either acetylenes or acetylenedicobalt hexacarbonyl complexes ... 

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