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Temperature Change in the Electronic Spectra of an NH2(CH3)2CuCl3 Crystal in Phase Transitions

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Abstract

Based on data of the spectral studies of an NH2(CH3)2CuCl3 crystal, the presence of phase transitions of the first kind at temperatures T 1 = 282.5 K and T 2 = 245 K (in a cooling regime) is confirmed. Identification of the intraionic absorption bands of the Cu2+ ion and calculation of the parameters of the energy and space structure of the crystal are carried out. A decrease in the tetragonal distortion of the CuCl5 polyhedron with decreasing the temperature is found. The empirical Urbach rule is observed to be fulfilled in the low‐temperature phases of the crystal.

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Authors and Affiliations

  1. I. Fran'ko L'vov National University, 19 Dragomanov Str., L'vov, UA‐79005, Ukraine

    V. B. Kapustyanyk, Yu. M. Korchak, V. V. Bazhan & Yu. I. Éliyashevskii

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  1. V. B. Kapustyanyk
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  2. Yu. M. Korchak
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  3. V. V. Bazhan
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  4. Yu. I. Éliyashevskii
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Correspondence to V. B. Kapustyanyk.

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Kapustyanyk, V.B., Korchak, Y.M., Bazhan, V.V. et al. Temperature Change in the Electronic Spectra of an NH2(CH3)2CuCl3 Crystal in Phase Transitions. Journal of Applied Spectroscopy 69, 406–412 (2002). https://doi.org/10.1023/A:1019755317040

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  • DOI: https://doi.org/10.1023/A:1019755317040

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