Communication

Observation of an Iron(II) Spin-Crossover in an Iron Octacyanoniobate-Based Magnet†

  1. Michio Arai1,
  2. Wataru Kosaka1,2,
  3. Tomoyuki Matsuda Dr.1,
  4. Shin-ichi Ohkoshi Prof. Dr.1

Article first published online: 5 AUG 2008

DOI: 10.1002/anie.200802266

Issue

Angewandte Chemie International Edition

Angewandte Chemie International Edition

Volume 47, Issue 36, pages 6885–6887, August 25, 2008

Additional Information

How to Cite

Arai, M., Kosaka, W., Matsuda, T. and Ohkoshi, S.-i. (2008), Observation of an Iron(II) Spin-Crossover in an Iron Octacyanoniobate-Based Magnet. Angew. Chem. Int. Ed., 47: 6885–6887. doi: 10.1002/anie.200802266

Author Information

  1. 1

    Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)

  2. 2

    Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)

  1. †

    We thank Dr. H. Tokoro for helpful discussions. The present research was supported, in part, by a Grant for the Global COE Program, “Chemistry Innovation through Cooperation of Science and Engineering”, a Grant-in-Aid for Scientific Research (B) from the Ministry of Education, Culture, Sports, Science and Technology of Japan, the Royal Society Joint Project Programme, the Iketani Science and Technology Foundation, the Inamori Foundation, the Kurata Memorial Hitachi Science and Technology Foundation, and the Murata Science Foundation.

Publication History

  1. Issue published online: 20 AUG 2008
  2. Article first published online: 5 AUG 2008
  3. Manuscript Received: 15 MAY 2008

Funded by

  • Grant for the Global COE Program
  • Ministry of Education, Culture, Sports, Science and Technology of Japan
  • Royal Society Joint Project Programme
  • Iketani Science and Technology Foundation
  • Inamori Foundation
  • Kurata Memorial Hitachi Science and Technology Foundation
  • Murata Science Foundation

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Keywords:

  • coordination polymers;
  • iron;
  • magnetic properties;
  • niobium
Thumbnail image of graphical abstract

A spin-crossover from FeII(S=2)-NbIV(S=1/2)-FeII(S=2) to FeII(S=0)-NbIV(S=1/2)-FeII(S=2) occurs in Fe2[Nb(CN)8]⋅(3-pyCH2OH)8⋅4.6 H2O (3-py=3-pyridyl) with decreasing temperature (see picture; red Fe, blue Nb). The low-temperature phase shows ferrimagnetism with a Curie temperature of 12 K owing to an antiferromagnetic interaction between the remaining FeII (S=2) and the NbIV (S=1/2) centers.

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