Thermal deformation and polymorphic transitions of 1,1-diamino-2,2-dinitroethylene in the temperature range from 145 to 475 K
| Autor: | N. P. Taibinov, A. V. Stankevich, O. V. Kostitsyn, A. Yu. Garmashev |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Journal of Physics: Conference Series. 1787:012006 |
| ISSN: | 1742-6596 1742-6588 |
| Popis: | Under atmospheric pressure conditions, direct polymorphic transitions α to β, β to γ and reverse γ to α were studied, as well as certain phase equilibrium points for 1,1-diamino-2,2-dinitroethylene (DADNE) were determined in the temperature range from 145 to 475 K. The anisotropic characteristics of the thermal deformation of DADNE crystals are determined by powder thermal x-ray diffraction of an internal standard. The points of structural changes were recorded in increments of 20, 10, and 2 K. The calculations of x-ray powder diffraction data were carried out using full-profile analysis methods with the integrated cycle of molecular modeling of the structure of molecules integrated into the algorithm. |
| Databáze: | OpenAIRE |
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