Synthesis of co-ordinated trans-1.2-di(cycloheptatrienyl)ethylene, a new cyclo-octatetraene dimer, and the X-ray crystal structure of an intermediate bis-phosphonium salt [Fe<sub>2</sub>(CO)<sub>6</sub>{η<sup>4</sup>,η′<sup>4</sup>-C<sub>16</sub>H<sub>16</sub>(PPh<sub>3</sub>)<sub>2</sub>}][PF<sub>6</sub>]<sub>2</sub>
作者:Neil G. Connelly、Rona M. Mills、Mark W. Whiteley、Peter Woodward
DOI:10.1039/c39810000017
日期:——
The dication (1) obtained from tricarbonyl (η4-cyclo-octatetraene) iron and PPh3 afford the bis-phosphonium salt (6), X-ray structural studies on which reveal both phosphorus atoms attached to one of the C7-rings; reduction of (6) with Na[BH4] gives (7), a complex of the cyclo-octatetraene dimer, trans-1, 2-di(cycloheptatrienyl)ethylene.