A series of aromatic ethynyl-bridged ferrocenes with the general formula Fc-CdropC-R-CdropC-Fc (Fc = ferrocenyl, R = C6H2(-p-CH3)(2) (1), C6H4-p-C6H4 (2), C5H3N (3), 9,10-C14H8 (4), C4H2S (5), (C4H2S)(2) (6) and (C4H2S)(3) (7)) has been synthesised by the reaction of ethynyl ferrocene with the appropriate dibromo-arenes. The new complexes have been characterised by spectroscopic techniques. The structures of 3 and 7 were determined via X-ray crystallography, and both show the trans-trans configuration of the two ethynyl ferrocene groups with respect to the central R group. The electronic properties of the compounds have been studied via optical spectroscopy and cyclic voltammetry. (C) 2004 Elsevier B.V. All rights reserved.
Chawdhury, N., Long, N. J., Mahon, M. F., Ooi, L. L., Raithby, P. R., Rooke, S., White, A. J. P., Williams, D. J., & Younus, M. (2004). Synthesis and characterisation of aromatic ethynyl-bridged ferrocenes. Journal of Organometallic Chemistry, 689(4), 840-847. https://doi.org/10.1016/j.jorganchem.2003.11.035