Charge-Transfer Phase Transition of a Cyanide-Bridged FeII/FeIII Coordination Polymer

Kuirun Zhang, Soonchul Kang, Zi Shuo Yao, Kazusa Nakamura, Takashi Yamamoto, Yasuaki Einaga, Nobuaki Azuma, Yuji Miyazaki, Motohiro Nakano, Shinji Kanegawa, Osamu Sato

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26 Citations (Scopus)


Heterometallic Prussian blue analogues are known to exhibit thermally induced charge transfer, resulting in switching of optical and magnetic properties. However, charge-transfer phase transitions have not been reported for the simplest FeFe cyanide-bridged systems. A mixed-valence FeII/FeIII cyanide-bridged coordination polymer, {[Fe(Tp)(CN)3]2Fe(bpe)5 H2O}n, which demonstrates a thermally induced charge-transfer phase transition, is described. As a result of the charge transfer during this phase transition, the high-spin state of the whole system does not change to a low-spin state. This result is in contrast to FeCo cyanide-bridged systems that exhibit charge-transfer-induced spin transitions.

Original languageEnglish
Pages (from-to)6047-6050
Number of pages4
JournalAngewandte Chemie - International Edition
Issue number20
Publication statusPublished - May 10 2016


  • charge transfer
  • cyanide complexes
  • iron
  • mixed-valence
  • phase transitions

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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    Zhang, K., Kang, S., Yao, Z. S., Nakamura, K., Yamamoto, T., Einaga, Y., Azuma, N., Miyazaki, Y., Nakano, M., Kanegawa, S., & Sato, O. (2016). Charge-Transfer Phase Transition of a Cyanide-Bridged FeII/FeIII Coordination Polymer. Angewandte Chemie - International Edition, 55(20), 6047-6050.