Title: Direct Observation of Ordered High-Spin-Low-Spin Intermediate States of an Iron(III) Three-Step Spin-Crossover Complex.
Authors: 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
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.
Subjects: IRON compound synthesis; SPIN crossover; SYMMETRY breaking; THIOSEMICARBAZONES; HYSTERESIS loop; PHASE transitions; X-ray diffraction; SALICYLIC acid
Publication: Angewandte Chemie, 2016, Vol 128, Issue 17, p5270
ISSN: 0044-8249
Publication type: Academic Journal
DOI: 10.1002/ange.201511281

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