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Low-temperature heat capacity of β-glycine and a phase transition at 252 K

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Abstract

Low-temperature heat capacity of unstable β-glycine was measured in a temperature range 5.5 to 295 K, and thermodynamic functions were calculated. At very low temperatures, heat capacity fits a sum of cubic (Debye) and linear terms: Cp=aT+bT 3. The linear contribution increases with temperature and disappears at the second-order phase transition near 252 K which was observed for the first time.

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Authors and Affiliations

  1. Novosibirsk State University, ‘Molecular Design and Ecologically Safe Technologies’ REC-008, Ul. Pirogova 2, Novosibirsk, 630090, Russia

    V. A. Drebushchak & E. V. Boldyreva

  2. Institute of Mineralogy and Petrography SB RAS, Pr. Ac. Koptyuga 3, Novosibirsk, 630090, Russia

    V. A. Drebushchak

  3. Institute of Inorganic Chemistry SB RAS, Pr. Ac. Lavrentieva 3, Novosibirsk, 630090, Russia

    V. A. Drebushchak, Yu. A. Kovalevskaya & I. E. Paukov

  4. Institute of Solid State Chemistry and Mechanochemistry SB RAS, Ul. Kutateladze 18, Novosibirsk, 630128, Russia

    E. V. Boldyreva & T. N. Drebushchak

Authors
  1. V. A. Drebushchak
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  2. E. V. Boldyreva
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  3. Yu. A. Kovalevskaya
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  4. I. E. Paukov
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  5. T. N. Drebushchak
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Correspondence to V. A. Drebushchak.

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Drebushchak, V.A., Boldyreva, E.V., Kovalevskaya, Y.A. et al. Low-temperature heat capacity of β-glycine and a phase transition at 252 K. J Therm Anal Calorim 79, 65–70 (2005). https://doi.org/10.1007/s10973-004-0563-8

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  • DOI: https://doi.org/10.1007/s10973-004-0563-8

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