The vinylene-bridged ansa-ferrocene complex [(η 5 -C 5 H 4 )CH CH(η 5 -C 5 H 4 )]Fe ( 1 ) was synthesized by the McMurry coupling of 1,1‘-ferrocenedicarbaldehyde ( 2 ). The ring opening metathesis polymerization (ROMP) of this strained metallocene gave poly(ferrocenylenevinylene) ( 3 ) as an insoluble orange solid which has a conductivity of 10 - 3 Ω - 1 cm - 1 after doping with iodine. Partially soluble materials resulted when 1 was copolymerized with norbornene to yield a block copolymer.
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Buretea et al. (1997) studied this question.
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