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Book chapter
English

Light-induced spin crossover and the high-spin→low-spin relaxation

Contributors

Hauser, Andreas

Published in

Topics in current chemistry. Vol. 234 : spin crossover in transition metal compounds II, p. 786

Publisher

Berlin : Springer

Publication date

2004

Abstract

The discovery of a light-induced spin transition at cryogenic temperatures in a series of iron(II) spin-crossover compounds in 1984 has had an enormous impact on spin-crossover research. Apart from being an interesting photophysical phenomenon in its own right, it provided the means of studying the dynamics of the intersystem crossing process between the high-spin and the low-spin state in a series of compounds and over a large temperature range. It could thus be firmly established that intersystem crossing in spin-crossover compounds is a tunnelling process, with a limiting low-temperature lifetime below 50 K and a thermally activated region above 100 K. This review begins with an elucidation of the mechanism of the light-induced spin transition, followed by an in depth discussion of the chemical and physical factors, including cooperative effects, governing the lifetimes of the light-induced metastable states.

Keywords

  • Thermal and light-induced spin crossover
  • High-spinrarrlow-spin relaxation
  • Intersystem crossing
  • External pressure
  • Chemical pressure
  • Cooperative effects
  • Iron(II) complexes

UNIGE affiliation entities

Citation (ISO format)

HAUSER, Andreas. Light-induced spin crossover and the high-spin→low-spin relaxation. In: Topics in current chemistry. Vol. 234 : spin crossover in transition metal compounds II. Berlin : Springer, 2004. p. 786. doi: 10.1007/b95416

Identifiers

Additional URL for this publication

http://www.springerlink.com/content/c6thpmwxhdwa75l0/
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Technical informations

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30/10/2009 16:37:00

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