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Issue 25, 2011
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Optical electron transfer through 2,7-diethynylfluorene spacers in mixed-valent complexes containing electron-rich “(η2-dppe)(η5-C5Me5)Fe” endgroups

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Abstract

We report in this communication the study of the intramolecular electron transfer through a 2,7-diethynylfluorenyl spacer in the Fe(II)/Fe(III) mixed-valent (MV) complex [(η2-dppe)(η5-C5Me5)FeC[triple bond, length as m-dash]C(2,7-C21H24)C[triple bond, length as m-dash]CFe(η5-C5Me5)(η2-dppe)][PF6] (1[PF6]). The complex is generated in situ by comproportionation from its homovalent dinuclear Fe(II) and Fe(III) parents (1 and 1[PF6]2). It is shown that electronic delocalization is much more effective through a 2,7-fluorenyl than through a 4,4′-biphenyl bridging unit.

Graphical abstract: Optical electron transfer through 2,7-diethynylfluorene spacers in mixed-valent complexes containing electron-rich “(η2-dppe)(η5-C5Me5)Fe” endgroups

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Article information


Submitted
10 Feb 2011
Accepted
14 Apr 2011
First published
19 May 2011

Dalton Trans., 2011,40, 6616-6618
Article type
Communication

Optical electron transfer through 2,7-diethynylfluorene spacers in mixed-valent complexes containing electron-rich “(η2-dppe)(η5-C5Me5)Fe” endgroups

F. Malvolti, C. Rouxel, O. Mongin, P. Hapiot, L. Toupet, M. Blanchard-Desce and F. Paul, Dalton Trans., 2011, 40, 6616
DOI: 10.1039/C1DT10231A

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