222552-64-9Relevant academic research and scientific papers
Synthesis, structure and electrochemistry of ferrocenylethynylsilanes and their complexes with dicobalt octacarbonyl1
Duffy, Noel W.,Robinson, Brian H.,Simpson, Jim
, p. 36 - 46 (2007/10/03)
Coupling of lithium ethynylferrocene to alkyl and aryl chlorosilanes and to silicon tetrachloride leads to the formation of a variety of ferrocenylethynylsilanes, [(η5-C5H5)Fe(η5-C 5H4C2)]4-nSiRn (n=0-3, R=Me, Ph). An additional series of compounds [(η5-C5H5)Fe(η5-C 5H4C2)]4-nSi(n-Bu)xR y (n=0-3, x+y=n, R=Me, Ph) result from competitive reactions of excess n-BuLi at the silicon centre. Dicobalt octacarbonyl reacts with the ferrocenylethynylsilanes to give dicobalt hexacarbonyl derivatives, but for the tris- and tetrakis-compounds coordination of Co2(CO)6 is limited to two of the alkyne units as a result of steric crowding around the silicon centre. The crystal and molecular structure of the complex [(η5-C5H5)Fe(η5-C 5H4C-(Co2(CO)6)C] 2Si[(CC-η5-C5H4)Fe(η 5-C5H5)]2 has been determined from X-ray data. Electrochemical investigation of the ferrocenylethynylsilanes and their dicobalt complexes shows that the equivalent ferrocenyl redox centres in these molecules are non-interacting.
