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Vibrational and orientational relaxation of thiocyanate ion in crown ether complexes

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Abstract

The IR absorption and Raman spectra of the following complex compounds based on thiocyanates and crown ethers have been studied: KSCN-18-crown-6, KSCN-dibenzo-18-crown-6, NaSCN-dibenzo-18-crown-6, and NaSCN-benzo-15-crown-5. The shape of the contour of the spectral line corresponding to the stretching vibration ν1(CN) of the thiocyanate ion in the indicated compounds in the temperature interval involving solid and liquid phases have been investigated for the first time. The reorientation parameters and molecular-relaxation characteristics of the thiocyanate ion in the crown compounds have been calculated. It is found that an increase in temperature leads to gradual freeing of cations and to the properties of crown compounds becoming identical to those of pure salt melts.

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Authors and Affiliations

  1. Institute of Physics of the Dagestan Scientific Center, Russian Academy of Sciences, 94 M. Yaragskii Str., Makhachkala, 367003, Russia

    M. M. Gafurov, A. R. Aliev & V. D. Prisyazhnyi

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  1. M. M. Gafurov
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  2. A. R. Aliev
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  3. V. D. Prisyazhnyi
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Correspondence to A. R. Aliev.

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__________

Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 72, No. 1, pp. 23–27, January–February, 2005.

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Gafurov, M.M., Aliev, A.R. & Prisyazhnyi, V.D. Vibrational and orientational relaxation of thiocyanate ion in crown ether complexes. J Appl Spectrosc 72, 20–25 (2005). https://doi.org/10.1007/s10812-005-0025-5

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  • DOI: https://doi.org/10.1007/s10812-005-0025-5

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