Synthesis, hydrogen-bonded 1D structure, and abrupt spin transition between high-spin (HS) and an ordered [HS-HS-HS-LS] of a mononuclear iron(III) complex [FeIII(Him)2(4-MeOhapen)]CF3SO3 (Him = imidazole, 4-MeOhapen = N,N′-bis(2-oxy-4-methoxyacetophenylidene)ethylenediamine)

Kyohei Miyano, Takahiro Nishida, Hiromasa Ono, Daisuke Hamada, Takeshi Fujinami, Naohide Matsumoto, Yukinari Sunatsuki

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A SCO iron(III) complex [FeIII(Him)2(4MeOhapen)]CF3SO3 was synthesized, where Him = imidazole and 4-MeOhapen = N,N′-bis(2-oxy-4-methoxyacetophenylidene)ethylenediamine. FeIII ion has an octahedral coordination geometry with N2O2 donor atoms of the equatorial tetradentate ligand (4-MeOhapen) and two nitrogen atoms of two imidazoles (Him) at the axial positions. The adjacent cations are bridged by CF3SO3- ion through NH⋯O hydrogen bonds between Him and CF3SO3- to give a one-dimensional chain structure {[FeIII(Him)2(4MeO-hapen)]CF3SO3}1. The magnetic susceptibility measurements showed that complex exhibits an abrupt spin transition between a single HS phase and a symmetry-breaking [HS-HS-HS-LS] phase and another transition around 80 K. The single-crystal X-ray analyses at 296 and 150 K revealed the structures at a single HS and [HS-HS-HS-LS] states.

Original languageEnglish
Pages (from-to)49-54
Number of pages6
JournalInorganica Chimica Acta
Volume439
DOIs
Publication statusPublished - Jan 1 2016

Keywords

  • 1D structure
  • Hydrogen bonds
  • Imidazole
  • Iron(III)
  • NO Schiff-base ligand
  • Spin crossover

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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