Lattice dynamics of some spin-crossover complexes: Mossbauer and VTFTIR measurements

A. A. Yousif*, H. Winkler, H. Toftlund, A. X. Trautwein, R. H. Herber

*Corresponding author for this work
21 Citations (Scopus)


Temperature-dependent Mossbauer spectroscopy and variable temperature Fourier transform infrared techniques were employed to follow the spin conversion of Fe(BPTN)(NCS)2 and Fe(TPA)(NCS)2 complexes. The hyperfine interaction parameters and Debye-Waller factors were determined using the Mossbauer effect. The complexes show gradual HS to or from LS transition in the temperature range 4.2-300 K. The lattice dynamical properties at the metal sites in the 1A1 state were observed to be significantly different from those in the 5T2 configuration. It has been demonstrated that detailed f-factor measurements may be essential for accurate estimation of the spin-conversion function of such complexes.

Original languageEnglish
Article number022
JournalJournal of Physics: Condensed Matter
Issue number39
Pages (from-to)7103-7112
Number of pages10
Publication statusPublished - 01.12.1989


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