Ruthenocene, ruthenocenyl

Third, metallocene units, such as ferrocene or ruthenocene, have been linked to phosphazene cyclic trimers or tetramers and these were polymerized and substituted to give polymers of the type mentioned previously (41). Polyphosphazenes with ferrocenyl groups can be doped with iodine to form weak semiconductors. Polymer chains that bear both ruthenocenyl and ferrocenyl side groups are prospective electrode mediator systems. 

It would also be interesting to check the ability of the ruthenocene acrylonitrile cation-radical to rotate around the ethylene bond Ruthenocenyl is weaker than ferrocenyl as a donor substituent (Laus et al. 2005). The particular property of rotating around the ethylenic bond in cation-radicals is a method of elucidating an electronic structure. 

Similar to ferrocene, the ruthenocene derivatives (89) substituted with a CR R group are greatly stabilized in comparison to noncomplexed carbenes or carbonium ions. In fact, from the enhanced barrier to internal rotation in the a-ruthenocenyl carbonium ion Ru-CHMe+ (>130kJmol ) compared with the related ferrocene derivative (70kJmol ), even greater stabilization in ruthenocene is expected. 

Three interesting ruthenocenyl diones have been obtained 15 by treatment of the compound [RuCp"( "-C5H4G02H)] with (CF3C0)20 and 16 and 17 from reaction of ruthenocene carbonyl chloride with AlCls. ... 

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