Synergistic spin transition between spin crossover and spin-peierls-like singlet formation in the halogen-bonded molecular hybrid system: [Fe(Iqsal) 2][Ni(dmit)2]×CH3CN×H2O

Kappei Fukuroi, Kazuyuki Takahashi, Tomoyuki Mochida, Takahiro Sakurai, Hitoshi Ohta, Takashi Yamamoto, Yasuaki Einaga, Hatsumi Mori

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45 Citations (Scopus)

Abstract

To introduce halogen-bond interactions between a cation and an anion, a novel FeIII complex from iodine-substituted ligands involving a paramagnetic nickel dithiolene anion was prepared and characterized. The compound exhibited the synergy between a spin-crossover transition and a spin-Peierls-like singlet formation. The halogen-bond interactions between the iodine and the sulfur atoms stabilized the paramagnetic state of π-spins and played a crucial role in the synergistic magnetic transition between d- and π-spins. In addition, the compound showed the light-induced excited spin state trapping effect. Something to get crossover: An FeIII complex with iodine-substituted ligands involving a paramagnetic nickel dithiolene anion shows a synergy between a spin-crossover transition and a spin-Peierls-like singlet formation. The halogen-bond interactions between the iodine and the sulfur atoms stabilized the paramagnetic state of π-spins and played a significant role in the synergistic magnetic transition between d- and π-spins.

Original languageEnglish
Pages (from-to)1983-1986
Number of pages4
JournalAngewandte Chemie - International Edition
Volume53
Issue number7
DOIs
Publication statusPublished - 2014 Feb 10

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Keywords

  • halogen bonds
  • iron complexes
  • nickel complexes
  • phase transitions
  • spin crossover

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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