CARBONERA, Chiara; DEI, Andrea; LÉTARD, Jean-François; SANGREGORIO, Claudio; SORACE, Lorenzo

doi:10.1016/j.ica.2007.01.020

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CARBONERA, Chiara
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

DEI, Andrea
Dipartimento di Chimica

LÉTARD, Jean-François
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Inorganica Chimica Acta. 2007, vol. 360, n° 13, p. 3825-3828

Elsevier

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The temperature dependence of the relaxation dynamics of a dinuclear cobalt-tetraoxolene complex undergoing photoinduced valence tautomerism is reported and discussed. Two different regimes were detected, one at low (5–20 K) and a second at higher temperatures (20–35 K). The activation energy for the low temperature regime suggests a tunnelling process assisted by lattice phonons. In the thermally activated region the activation energy is far from that expected for the total-symmetric Co–O breathing mode, thus suggesting an important role for other internal vibrational modes.< Leer menos

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Valence tautomerism

Redox isomerism

Photochromism

Photomagnetism

Semiquinone

Radical ligand

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Relaxation dynamics of a photoinduced di-cobalt-tetraoxolene valence tautomer

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