Ferrocene tetramers

A series of cumulene-bound ferrocene tetramers, 47, have been synthesized and their electrochemical properties examined by... 

C52Hei AgijFeftNfl, 2-Silver (dimethylaminomethyl) ferrocene tetramer,... 

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. 

Like nickelocene itself, this complex has 2 electrons more than the number expected using the electron-counting approach outlined in this article. Interestingly, the iron analog [(C5H5)sFe2], for which such a tripledecker structure appears appropriate on an electron count, has been detected in mass-spectroscopic studies on ferrocene 179) and on the cyclopentadienyl iron carbonyl tetramer [C5H5FeCO]4 136). 

C2 H2oFe, U)-(1,2-Diphenylethenyl)ferrocene, 45B, 975 C24H2oFe404, Cyclopentadienyliron carbonyl tetramer, 38B, 784 C2 4H20I r Cyclopentadienyl (triphenylphosphine) carbonyl iridium,... 

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