Observation of the structural consequences of a reversible S = 3/2 and S = 1/2 spin crossover in the single crystal

Yoshiki Ohgo, Takahisa Ikeue, Mikio Nakamura

研究成果: Article査読

43 被引用数 (Scopus)

抄録

Highly saddle shaped iron(III) porphyrin complex 1 showing a novel spin crossover process between the S = 3/2 and S = 1/2 has been crystallographically analyzed at 298, 180, and 80 K. As the temperature is lowered, the lattice contraction has occurred specifically along the b-axis. Correspondingly, the iron-pyridine bonds, which tilt slightly from the b-axis, have decreased by 7.3%. In contrast, the lattice contractions along the a- and c-axes are much smaller and the iron-porphyrin bonds, which almost coincide with the a- and c-axes, have shown much smaller contraction, ca. 2.2%. The large contraction of the specific bonds caused by packing force raises the energy level of the dz2 orbital and induces the spin transition. The detailed structural and lattice changes in the single crystal, which may be regarded as a superstructure parallel to a protein matrix, have been clarified.

本文言語English
ページ(範囲)1698-1700
ページ数3
ジャーナルInorganic Chemistry
41
7
DOI
出版ステータスPublished - 2002 4月 8
外部発表はい

ASJC Scopus subject areas

  • 物理化学および理論化学
  • 無機化学

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