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Vaporization and thermal decomposition of B,B′,B″-tribromoborazine

  • Physical Methods of Investigation
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Abstract

Vapor pressure as a function of temperature above solid and liquid (BrBNH)3 and the thermodynamic parameters of (BrBNH)3 sublimation and vaporization have been determined using static tensimetry with membrane null-manometer. The thermal decomposition of tribromoborazine has been studied in the saturated and unsaturated vapor regions. Irreversible decomposition occurred at noticeable rates at temperatures higher than 343 K and was accompanied by HBr evolution. In the unsaturated vapor region, thermal decomposition has far lower rates than in the saturated vapor region because of diffusion limitations. The activation energy of condensed-phase thermal decomposition of B,B′,B″-tribromoborazine is 65 ± 3 kJ/mol, and this value proves that tribromoborazine decomposition at low temperatures is not accompanied by opening of the boron-nitrogen cycle.

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Authors and Affiliations

  1. Chemistry Department, St. Petersburg State University, St. Petersburg, Russia

    I. V. Kazakov & A. Yu. Timoshkin

Authors
  1. I. V. Kazakov
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  2. A. Yu. Timoshkin
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Original Russian Text © I.V. Kazakov, A.Yu. Timoshkin, 2012, published in Zhurnal Neorganicheskoi Khimii, 2012, Vol. 57, No. 4, pp. 621–627.

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Kazakov, I.V., Timoshkin, A.Y. Vaporization and thermal decomposition of B,B′,B″-tribromoborazine. Russ. J. Inorg. Chem. 57, 557–563 (2012). https://doi.org/10.1134/S0036023612040110

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  • DOI: https://doi.org/10.1134/S0036023612040110

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