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Raman and nuclear inelastic scattering study of the lattice dynamics of the Fe(H2B(pz)(2))(2)(phen) spin crossover complex

Abstract : We report on a combined nuclear inelastic scattering and metal isotope substitution based Raman spectroscopic investigation of lattice dynamics changes associated with the spin transition in the ferrous complex [Fe(H2B(pz)(2))(2)(phen)] (pz = pyrazolyl, phen = 1,10-phenantroline). These techniques allowed us to identify Raman active metal - ligand stretching vibrations in the high spin (v(HS) = 232 cm(-1)) and low spin (v(LS) = 390 cm(-1)) states as well as to calculate associated changes of the Debye temperature (Theta(HS)(D) = 140 K, Theta(LS)(D) = 146 K), Debye sound velocity (v(HS) = 1282 m/s, v(LS) = 1300 m/s) and Young's modulus (E-HS = 4.7 GPa, E-LS = 5.2 GPa).
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https://hal.archives-ouvertes.fr/hal-01934975
Contributor : Marie-Hélène Gulli <>
Submitted on : Monday, November 26, 2018 - 2:04:53 PM
Last modification on : Friday, March 12, 2021 - 1:32:05 PM

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Sylvain Rat, Mirko Mikolasek, José Sánchez Costa, A. I. Chumakov, W. Nicolazzi, et al.. Raman and nuclear inelastic scattering study of the lattice dynamics of the Fe(H2B(pz)(2))(2)(phen) spin crossover complex. Chemical Physics Letters, Elsevier, 2016, 653, pp.131-136. ⟨10.1016/j.cplett.2016.04.014⟩. ⟨hal-01934975⟩

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