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The lattice dynamics of the Fe(tpa) (NCS)2 complex : light-induced excited spin state trapping effect

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Abstract

A light-induced excited spin state trapping (LIESST) experiment for a thermal gradual spin crossover complex, Fetris (2-pyridylmethyl) amine(NCS)2 or Fe(tpa) (NCS)2, was attempted for the first time. The high spin (HS) state after light inducement stayed metastable over a period of days without relaxation at 10 K. Intersystem relaxation from a high to a low spin (LS) complex occurred at 50 K after bleaching at 10 K. Investigation of the Mossbauer spectra of the LIESST and relaxation experiment indicated that the Debye–Waller factor was a correlation parameter of the HS fraction and that the co-operative effect played a role in the relaxation process for such a solid compound.

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Authors and Affiliations

  1. Coordination Chemistry Institute, 210093, Nanjing, People's Republic of China

    Z. Yu

  2. Physics Department, Nanjing University, 210093, Nanjing, People's Republic of China

    Y. F. Hsia

  3. Institut fur Anorganische Chemie, Universitat Mainz, D-55099, Germany

    X. Z. You

Authors
  1. Z. Yu
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  2. Y. F. Hsia
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  3. X. Z. You
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  4. H. Spiering
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  5. P. Gutlich
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Yu, Z., Hsia, Y.F., You, X.Z. et al. The lattice dynamics of the Fe(tpa) (NCS)2 complex : light-induced excited spin state trapping effect. Journal of Materials Science 32, 6579–6581 (1997). https://doi.org/10.1023/A:1018627714649

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  • DOI: https://doi.org/10.1023/A:1018627714649

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