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Your search keyword '"Strizhenko, Kirill V."' showing total 11 results
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11 results on '"Strizhenko, Kirill V."'

9. Synthesis and Crystal Structure of 3-(4-Cyano-3-nitro-1 H -pyrazol-5-yl)-4-nitrofurazan: Comparison of the Influence of the NO 2 and CN Groups on Crystal Packing and Density.

Author

Suponitsky, Kyrill Yu. and Strizhenko, Kirill V.

Subjects
*CRYSTAL structure, *CYANIDES, *SINGLE crystals, *CRYSTALS, *NUCLEAR magnetic resonance spectroscopy, *PRUSSIAN blue
Abstract

The title compound was synthesized and characterized by IR and NMR spectroscopy and single crystal X-ray diffraction. The analysis of the crystal packing of the title compound and its analog, bearing a nitro group instead of a nitrile one, allowed a direct comparison of two common explosophoric groups: CN and NO2. By using ΔOED-based densification approach, it is shown that the CN group is lighter in mass, less dense, and participates in intermolecular bonding to a lesser extent in comparison to the NO2 group. As a result, the cyano compound has a lower density and a looser crystal packing than the nitro analog. [ABSTRACT FROM AUTHOR]

Published
2023
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10. Energetic [1,2,5]oxadiazolo [2,3- a ]pyrimidin-8-ium Perchlorates: Synthesis and Characterization.

Author

Strizhenko, Kirill V., Smirnova, Anastasia D., Filatov, Sergei A., Sinditskii, Valery P., Stash, Adam I., Suponitsky, Kyrill Yu., Monogarov, Konstantin A., Kiselev, Vitaly G., and Sheremetev, Aleksei B.

Subjects
*PERCHLORATES, *FURAZANS, *X-ray spectroscopy, *THERMAL stability, *CRYSTAL structure, *NUCLEAR magnetic resonance spectroscopy, *COMBUSTION
Abstract

A convenient method to access the above perchlorates has been developed, based on the cyclocondensation of 3-aminofurazans with 1,3-diketones in the presence of HClO4. All compounds were fully characterized by multinuclear NMR spectroscopy and X-ray crystal structure determinations. Initial safety testing (impact and friction sensitivity) and thermal stability measurements (DSC/DTA) were also carried out. Energetic performance was calculated by using the PILEM code based on calculated enthalpies of formation and experimental densities at r.t. These salts exhibit excellent burn rates and combustion behavior and are promising ingredients for energetic materials. [ABSTRACT FROM AUTHOR]

Published
2022
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11. Nitroxy- and azidomethyl azofurazans as advanced energetic materials

Author

Sheremetev, Aleksei B., Mel'nikova, Svetlana F., Kokareva, Elizaveta S., Nekrutenko, Ruslan E., Strizhenko, Kirill V., Suponitsky, Kyrill Yu., Pham, Thanh Dat, Pivkina, Alla N., and Sinditskii, Valery P.

Abstract

Progress in the rocket industry is only possible on the basis of new, higher performance and more environmentally friendly materials compared to up-to-date propellant ingredients for liquid, solid, gelled and hybrid propellant systems. In this work, synthetic methods have been developed for the preparation of new energetic azofurazans bearing nitroxymethyl or azidomethyl groups. All prepared compounds were fully characterized by multinuclear NMR and IR spectroscopies, as well as elemental analyses. An analysis of the structural features based on the X-ray single-crystal diffraction made it possible to discuss their influence on the densities of the azofurazans of this study. Thermal decomposition and combustion of nitroxymethyl and azidomethyl azofurazans were studied using a number of complementary experimental techniques, namely thermogravimetry, differential scanning calorimetry, manometry, microthermocouple measurements in the combustion wave. The structural and physical characteristics of these new energetic analogues illustrate the extent to which the nature of the explosophoric groups can be used to tune the performace of the azofurazan framework. These azofurazans possess positive calculated enthalpy of formation and are promising candidates for new environmentally friendly energetic materials.

Published
2021
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