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

doi:10.1016/j.ica.2015.09.031

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 [Fe^III(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

Advanced Science Research Center

Research output: Contribution to journal › Article

3 Citations (Scopus)

Abstract

A SCO iron(III) complex [Fe^III(Him)₂(4MeOhapen)]CF₃SO₃ was synthesized, where Him = imidazole and 4-MeOhapen = N,N′-bis(2-oxy-4-methoxyacetophenylidene)ethylenediamine. Fe^III 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 {[Fe^III(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 language	English
Pages (from-to)	49-54
Number of pages	6
Journal	Inorganica Chimica Acta
Volume	439
DOIs	https://doi.org/10.1016/j.ica.2015.09.031
Publication status	Published - 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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Miyano, K., Nishida, T., Ono, H., Hamada, D., Fujinami, T., Matsumoto, N., & Sunatsuki, Y. (2016). 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 [Fe^III(Him)₂(4-MeOhapen)]CF₃SO₃ (Him = imidazole, 4-MeOhapen = N,N′-bis(2-oxy-4-methoxyacetophenylidene)ethylenediamine). Inorganica Chimica Acta, 439, 49-54. https://doi.org/10.1016/j.ica.2015.09.031

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 [Fe^III(Him)₂(4-MeOhapen)]CF₃SO₃ (Him = imidazole, 4-MeOhapen = N,N′-bis(2-oxy-4-methoxyacetophenylidene)ethylenediamine). / Miyano, Kyohei; Nishida, Takahiro; Ono, Hiromasa; Hamada, Daisuke; Fujinami, Takeshi; Matsumoto, Naohide; Sunatsuki, Yukinari.

In: Inorganica Chimica Acta, Vol. 439, 01.01.2016, p. 49-54.

Research output: Contribution to journal › Article

Miyano, K, Nishida, T, Ono, H, Hamada, D, Fujinami, T, Matsumoto, N & Sunatsuki, Y 2016, '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 [Fe^III(Him)₂(4-MeOhapen)]CF₃SO₃ (Him = imidazole, 4-MeOhapen = N,N′-bis(2-oxy-4-methoxyacetophenylidene)ethylenediamine)', Inorganica Chimica Acta, vol. 439, pp. 49-54. https://doi.org/10.1016/j.ica.2015.09.031

Miyano K, Nishida T, Ono H, Hamada D, Fujinami T, Matsumoto N et al. 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 [Fe^III(Him)₂(4-MeOhapen)]CF₃SO₃ (Him = imidazole, 4-MeOhapen = N,N′-bis(2-oxy-4-methoxyacetophenylidene)ethylenediamine). Inorganica Chimica Acta. 2016 Jan 1;439:49-54. https://doi.org/10.1016/j.ica.2015.09.031

Miyano, Kyohei ; Nishida, Takahiro ; Ono, Hiromasa ; Hamada, Daisuke ; Fujinami, Takeshi ; Matsumoto, Naohide ; Sunatsuki, Yukinari. / 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 [Fe^III(Him)₂(4-MeOhapen)]CF₃SO₃ (Him = imidazole, 4-MeOhapen = N,N′-bis(2-oxy-4-methoxyacetophenylidene)ethylenediamine). In: Inorganica Chimica Acta. 2016 ; Vol. 439. pp. 49-54.

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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.",

keywords = "1D structure, Hydrogen bonds, Imidazole, Iron(III), NO Schiff-base ligand, Spin crossover",

author = "Kyohei Miyano and Takahiro Nishida and Hiromasa Ono and Daisuke Hamada and Takeshi Fujinami and Naohide Matsumoto and Yukinari Sunatsuki",

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T1 - 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)

AU - Miyano, Kyohei

AU - Nishida, Takahiro

AU - Ono, Hiromasa

AU - Hamada, Daisuke

AU - Fujinami, Takeshi

AU - Matsumoto, Naohide

AU - Sunatsuki, Yukinari

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N2 - 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.

AB - 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.

KW - 1D structure

KW - Hydrogen bonds

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KW - Iron(III)

KW - NO Schiff-base ligand

KW - Spin crossover

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