A Hydrogen-Bonded Cyanide-Bridged [Co2Fe2] Square Complex Exhibiting a Three-Step Spin Transition

Masayuki Nihei, Yuta Yanai, I. Jui Hsu, Yoshihiro Sekine, Hiroki Oshio

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

Co-crystallization of a cyanide-bridged tetranuclear complex [Co2Fe2] with 4-cyanophenol (CP) gave a hydrogen bonding donor–acceptor system, [Co2Fe2(bpy*)4(CN)6(tp*)2](PF6)2⋅2 CP⋅8 BN (1). 1 exhibited a three-step phase transition between HT, IM1, IM2, and LT phases upon temperature variation. Variable temperature magnetic measurements and structural analyses revealed that the three-step spin transition is caused by electron-transfer-coupled spin transitions (ETCSTs) accompanied with alteration of the hydrogen bonding interactions.

Original languageEnglish
Pages (from-to)591-594
Number of pages4
JournalAngewandte Chemie - International Edition
Volume56
Issue number2
DOIs
Publication statusPublished - 2017 Jan 9
Externally publishedYes

Keywords

  • cobalt
  • cyanides
  • hydrogen bonds
  • mixed-valent compounds
  • spin transition

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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