Abstract
The reaction of monolithioferrocene (prepared from ferrocene and n-butyllithium) and 0.25 equiv of hexafluorobenzene afforded 1,4-diferrocenyl-tetrafluorobenzene (1) in 15 % isolated yield. Complex (1) was characterized crystallographically. The molecule adopts a conformation in which the cyclopentadienyl-arylene torsion angle is about 14 deg, suggesting typical biaryl electronic conjugation. However, solution voltammetric data reveal very little electronic communication between the two iron centers. Thus the p-tetrafluorophenylene linker exhibits insulating behavior.
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Gary Hollis, W., Bonsall, T.F., Cuba, V.L. et al. Synthesis, Crystal Structure, and Electrochemical Analysis of 1,4-diferrocenyl-tetrafluorobenzene. Effects of Linker Perfluorination on Intermetallic Electronic Communication. Transition Met Chem 31, 246–249 (2006). https://doi.org/10.1007/s11243-005-6295-1
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DOI: https://doi.org/10.1007/s11243-005-6295-1