Ferrocene polymers ferrocenylenes

The presence of at least one alkyl group on the cyclopentadienyl motif is required to induce solubility in these poly(ferrocenylene persulfide)s. These polymers show two reversible oxidations. This type of electrochemical behavior is fairly common in ferrocene polymers where the ferrocene units are separated by short spacers as will be pointed out in the next section. 

The ptdymer XXX in the Fe(II) state has a low ccmductivity (10 —10 crfun" cm ) but subsequent to partial oxMation with picric acid, benzoquinone, chloranil TCNQ produces intensely cdouied salts with maximum conductivities at 70% oxidaticm of lO times that of tiie parent Such increases also occur with poly(ferrocenylene) (XXXI) polymer (XXXII) ptdj ethynyl-ferrocene) (XXXIV) and pdy(3-vinylbisfulvalenedi-iron) (XXXIIl) upcm partial oxidation. Polymer XXXIV incorporates both a conjugated n and redox tems. 

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