First delocalization of a mono-fulvalene-bridged mixed-valence diiron complex on the infrared time scale
- 1 January 1992
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 6,p. 519-520
- https://doi.org/10.1039/c39920000519
Abstract
Measurement of the infrared νCH(Cp) stretch around 800 cm–1 of the FeIIFeII(q= 2), FeII FeI(q= 1) and FeIFeI(q= 0) states of [Fe2Fv(C6Me6)2]q+(Fv= fulvalene) and FeIIFeII(q= 0), FeIIFeIII(q= 1) and FeIIIFeIII(q= 2) states of [Fe2Fv(C5Me5)2]q+ shows that FeIIFeI is delocalized whereas FeIIFeIII is localized; the electrochemical E° values indicate that the cyclopentadienyl permethylation increases the delocalization in the arene series whereas it decreases it in the C5Me5 one.Keywords
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