Pressure-stabilized low-spin state for binuclear iron(III) spin-crossover compounds

Shinya Hayami, Yuko Hosokoshi, Katsuya Inoue, Yasuaki Einaga, Osamu Sato, Yonezo Maeda

研究成果: Contribution to journalArticle査読

18 被引用数 (Scopus)

抄録

Binuclear iron(III) spin-crossover complexes with salten ligand [Fe 2(salten) 2(L)](BPh 4) 2 were synthesized and characterized by single-crystal X-ray diffraction, M6ssbauer spectra, magnetic susceptibilities and electronic spectra, where H 2salten is a pentadentate ligand derived from salicylaldehyde and 3,3′-diaminodipropylamine and L is a didentate axial ligand (az = azobis(4-pyridine) and cc = 4,4′-vinylenebis(pyridine)). The structures of [Fe 2(salten) 2(az)](BPh 4) 2 (1) and [Fe 2(salten) 2(cc)](BPh 4) 2 (2) were determined at both 100 K and 298 K. Crystal data for 1 at 100 K: C 98H 94 O 4N 10B 2Fe 2, monoclinic, space group P2 1/c, Z = 2, a = 15.986(2) Å, b = 15.825(2) Å, c = 16.441(2) Å, β = 107.902(2)°, V = 3957.8(8) Å 3. Crystal data for 2 at 100 K: C 100H 96 O 4N 8B 2Fe 2, monoclinic, space group P2 1/a, Z = 2, a = 16.4296(8) Å, b = 15.747(1) Å, c = 16.637(1) Å, β = 109.2375(9)° and Z = 2. The complexes 1 and 2 exhibited the spin-crossover behavior depending on temperature within the temperature range of 200 to 350 K, and rapid spin equilibrium behavior was observed by means of M6ssbauer spectroscopy at 293 K. The complexes 1 and 2 also exhibited a pressure-induced spin transition between the rapid spin equilibrium state and low-spin state at 300 K. Such a pressure-induced spin transition has not been reported earlier.

本文言語英語
ページ(範囲)2361-2368
ページ数8
ジャーナルBulletin of the Chemical Society of Japan
74
12
DOI
出版ステータス出版済み - 12 2001
外部発表はい

All Science Journal Classification (ASJC) codes

  • 化学 (全般)

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