Direct Observation of Ordered High-Spin-Low-Spin Intermediate States of an Iron(III) Three-Step Spin-Crossover Complex

Zhao Yang Li; Hiroyoshi Ohtsu; Tatsuhiro Kojima; Jing Wei Dai; Takefumi Yoshida; Brian K. Breedlove; Wei Xiong Zhang; Hiroaki Iguchi; Osamu Sato; Masaki Kawano; Masahiro Yamashita

doi:10.1002/anie.201511281

Direct Observation of Ordered High-Spin-Low-Spin Intermediate States of an Iron(III) Three-Step Spin-Crossover Complex

Zhao Yang Li, Hiroyoshi Ohtsu, Tatsuhiro Kojima, Jing Wei Dai, Takefumi Yoshida, Brian K. Breedlove, Wei Xiong Zhang, Hiroaki Iguchi, Osamu Sato, Masaki Kawano, Masahiro Yamashita

研究成果: Contribution to journal › Article › 査読

43 被引用数 (Scopus)

抄録

A neutral mononuclear Fe^III complex [Fe^III(H-5-Br-thsa-Me)(5-Br-thsa-Me)] H₂O (1; H₂-5-Br-thsa-Me=5-bromosalicylaldehyde methylthiosemicarbazone) was prepared that exhibited a three-step spin-crossover (SCO) with symmetry breaking and a 14 K hysteresis loop owing to strong cooperativity. Two ordered intermediate states of 1 were observed, 4HS-2LS and 2HS-4LS, which exhibited reentrant phase-transition behavior. This study provides a new platform for examining multistability in SCO complexes. In quite a state: A neutral mononuclear Fe^III complex [Fe^III(H-5-Br-thsa-Me)(5-Br-thsa-Me)] H₂O (thsa=5-bromosalicylaldehyde methylthiosemicarbazone) exhibited a three-step spin crossover with symmetry breaking and a 14 K hysteresis loop owing to strong cooperativity (see picture). The intermediate spin states showed remarkable long-range 4 HS-2 LS and 2 HS-4 LS spin-state ordering (HS=high-spin, red; LS=low-spin, green).

本文言語	英語
ページ（範囲）	5184-5189
ページ数	6
ジャーナル	Angewandte Chemie - International Edition
巻	55
号	17
DOI	https://doi.org/10.1002/anie.201511281
出版ステータス	出版済み - 4 18 2016
外部発表	はい

All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)

文献へのアクセス

10.1002/anie.201511281

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引用スタイル

Direct Observation of Ordered High-Spin-Low-Spin Intermediate States of an Iron(III) Three-Step Spin-Crossover Complex. / Li, Zhao Yang; Ohtsu, Hiroyoshi; Kojima, Tatsuhiro; Dai, Jing Wei; Yoshida, Takefumi; Breedlove, Brian K.; Zhang, Wei Xiong; Iguchi, Hiroaki; Sato, Osamu; Kawano, Masaki; Yamashita, Masahiro.

In: Angewandte Chemie - International Edition, Vol. 55, No. 17, 18.04.2016, p. 5184-5189.

研究成果: Contribution to journal › Article › 査読

Li, Zhao Yang ; Ohtsu, Hiroyoshi ; Kojima, Tatsuhiro ; Dai, Jing Wei ; Yoshida, Takefumi ; Breedlove, Brian K. ; Zhang, Wei Xiong ; Iguchi, Hiroaki ; Sato, Osamu ; Kawano, Masaki ; Yamashita, Masahiro. / Direct Observation of Ordered High-Spin-Low-Spin Intermediate States of an Iron(III) Three-Step Spin-Crossover Complex. In: Angewandte Chemie - International Edition. 2016 ; Vol. 55, No. 17. pp. 5184-5189.

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title = "Direct Observation of Ordered High-Spin-Low-Spin Intermediate States of an Iron(III) Three-Step Spin-Crossover Complex",

abstract = "A neutral mononuclear FeIII complex [FeIII(H-5-Br-thsa-Me)(5-Br-thsa-Me)] H2O (1; H2-5-Br-thsa-Me=5-bromosalicylaldehyde methylthiosemicarbazone) was prepared that exhibited a three-step spin-crossover (SCO) with symmetry breaking and a 14 K hysteresis loop owing to strong cooperativity. Two ordered intermediate states of 1 were observed, 4HS-2LS and 2HS-4LS, which exhibited reentrant phase-transition behavior. This study provides a new platform for examining multistability in SCO complexes. In quite a state: A neutral mononuclear FeIII complex [FeIII(H-5-Br-thsa-Me)(5-Br-thsa-Me)] H2O (thsa=5-bromosalicylaldehyde methylthiosemicarbazone) exhibited a three-step spin crossover with symmetry breaking and a 14 K hysteresis loop owing to strong cooperativity (see picture). The intermediate spin states showed remarkable long-range 4 HS-2 LS and 2 HS-4 LS spin-state ordering (HS=high-spin, red; LS=low-spin, green).",

author = "Li, {Zhao Yang} and Hiroyoshi Ohtsu and Tatsuhiro Kojima and Dai, {Jing Wei} and Takefumi Yoshida and Breedlove, {Brian K.} and Zhang, {Wei Xiong} and Hiroaki Iguchi and Osamu Sato and Masaki Kawano and Masahiro Yamashita",

note = "Funding Information: Z.Y.L. is grateful for financial support from the Japan Society for the Promotion of Science (JSPS). The X-ray diffraction study with synchrotron radiation was performed at the PFAR (NW2A Beamline) of the High Energy Accelerator Research Organization (KEK; proposal no. 2014G008) and at the Pohang Accelerator Laboratory (Beamline 2D) supported by POSTECH.",

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T1 - Direct Observation of Ordered High-Spin-Low-Spin Intermediate States of an Iron(III) Three-Step Spin-Crossover Complex

AU - Li, Zhao Yang

AU - Ohtsu, Hiroyoshi

AU - Kojima, Tatsuhiro

AU - Dai, Jing Wei

AU - Yoshida, Takefumi

AU - Breedlove, Brian K.

AU - Zhang, Wei Xiong

AU - Iguchi, Hiroaki

AU - Sato, Osamu

AU - Kawano, Masaki

AU - Yamashita, Masahiro

N1 - Funding Information: Z.Y.L. is grateful for financial support from the Japan Society for the Promotion of Science (JSPS). The X-ray diffraction study with synchrotron radiation was performed at the PFAR (NW2A Beamline) of the High Energy Accelerator Research Organization (KEK; proposal no. 2014G008) and at the Pohang Accelerator Laboratory (Beamline 2D) supported by POSTECH.

PY - 2016/4/18

Y1 - 2016/4/18

N2 - A neutral mononuclear FeIII complex [FeIII(H-5-Br-thsa-Me)(5-Br-thsa-Me)] H2O (1; H2-5-Br-thsa-Me=5-bromosalicylaldehyde methylthiosemicarbazone) was prepared that exhibited a three-step spin-crossover (SCO) with symmetry breaking and a 14 K hysteresis loop owing to strong cooperativity. Two ordered intermediate states of 1 were observed, 4HS-2LS and 2HS-4LS, which exhibited reentrant phase-transition behavior. This study provides a new platform for examining multistability in SCO complexes. In quite a state: A neutral mononuclear FeIII complex [FeIII(H-5-Br-thsa-Me)(5-Br-thsa-Me)] H2O (thsa=5-bromosalicylaldehyde methylthiosemicarbazone) exhibited a three-step spin crossover with symmetry breaking and a 14 K hysteresis loop owing to strong cooperativity (see picture). The intermediate spin states showed remarkable long-range 4 HS-2 LS and 2 HS-4 LS spin-state ordering (HS=high-spin, red; LS=low-spin, green).

AB - A neutral mononuclear FeIII complex [FeIII(H-5-Br-thsa-Me)(5-Br-thsa-Me)] H2O (1; H2-5-Br-thsa-Me=5-bromosalicylaldehyde methylthiosemicarbazone) was prepared that exhibited a three-step spin-crossover (SCO) with symmetry breaking and a 14 K hysteresis loop owing to strong cooperativity. Two ordered intermediate states of 1 were observed, 4HS-2LS and 2HS-4LS, which exhibited reentrant phase-transition behavior. This study provides a new platform for examining multistability in SCO complexes. In quite a state: A neutral mononuclear FeIII complex [FeIII(H-5-Br-thsa-Me)(5-Br-thsa-Me)] H2O (thsa=5-bromosalicylaldehyde methylthiosemicarbazone) exhibited a three-step spin crossover with symmetry breaking and a 14 K hysteresis loop owing to strong cooperativity (see picture). The intermediate spin states showed remarkable long-range 4 HS-2 LS and 2 HS-4 LS spin-state ordering (HS=high-spin, red; LS=low-spin, green).

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