An unprecedented homochiral mixed-valence spin-crossover compound

Yukinari Sunatsuki, Yuichi Ikuta, Naohide Matsumoto, Hiromi Ohta, Masaaki Kojima, Seiichiro Iijima, Shinya Hayami, Yonezo Maeda, Sumio Kaizaki, Françoise Dahan, Jean Pierre Tuchagues

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172 Citations (Scopus)


Spin doctoring: [FeIIH3L][FeIIIL] (NO3)2, where H3L is a hexadentate tripod ligand bearing three imidazole groups, is formed in a one-pot assembly reaction, and is shown to be a homochiral mixed-valence spin-crossover compound. The structure consists of a 2D assembled sheet that is held together by imidazole-imidazolate hydrogen bonds between [FeIIH3L]2+ and [FeIIIL] units (see picture). At least three electronic states can be accessed by temperature effects and photoirradiation.

Original languageEnglish
Pages (from-to)1614-1618
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number14
Publication statusPublished - Apr 11 2003



  • Bistability
  • Chirality
  • Hydrogen bonds
  • Mixed-valent compounds
  • Spin-crossover

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Cite this

Sunatsuki, Y., Ikuta, Y., Matsumoto, N., Ohta, H., Kojima, M., Iijima, S., Hayami, S., Maeda, Y., Kaizaki, S., Dahan, F., & Tuchagues, J. P. (2003). An unprecedented homochiral mixed-valence spin-crossover compound. Angewandte Chemie - International Edition, 42(14), 1614-1618.