Direct Observation of Ordered High‐Spin–Low‐Spin Intermediate States of an Iron(III) Three‐Step Spin‐Crossover Complex | Zendy

Li ZhaoYang | Zendy; Ohtsu Hiroyoshi | Zendy; Kojima Tatsuhiro | Zendy; Dai JingWei | Zendy; Yoshida Takefumi | Zendy; Breedlove Brian K. | Zendy; Zhang WeiXiong | Zendy; Iguchi Hiroaki | Zendy; Sato Osamu | Zendy; Kawano Masaki | Zendy; Yamashita Masahiro | Zendy

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

Author(s) -

Li ZhaoYang,

Ohtsu Hiroyoshi,

Kojima Tatsuhiro,

Dai JingWei,

Yoshida Takefumi,

Breedlove Brian K.,

Zhang WeiXiong,

Iguchi Hiroaki,

Sato Osamu,

Kawano Masaki,

Yamashita Masahiro

Publication year - 2016

Publication title -

angewandte chemie

Language(s) - English

Resource type - Journals

eISSN - 1521-3757

pISSN - 0044-8249

DOI - 10.1002/ange.201511281

Subject(s) - spin crossover , multistability , chemistry , spin transition , cooperativity , spin (aerodynamics) , hysteresis , condensed matter physics , crystallography , physics , thermodynamics , biochemistry , quantum mechanics , nonlinear system

A neutral mononuclear Fe III complex [Fe III (H‐5‐Br‐thsa‐Me)(5‐Br‐thsa‐Me)]⋅H 2 O ( 1 ; H 2 ‐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.

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