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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zhps-809</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>Кристаллическая структура 7-амино-8-R-3-трет-бутил-4-оксо-1,4-дигидропиразоло[5,1-c][1,2,4]триазинов</article-title><trans-title-group xml:lang="en"><trans-title>Crystal Structure of 7-Amino-8-R-3-tert-Butyl-4-Oxo-1,4-Dihyd-ropyrazolo[5,1-c][1,2,4]Triazines</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Миронович</surname><given-names>Л. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Mironovich</surname><given-names>L. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>305040, Курск.</p></bio><bio xml:lang="en"><p>Kursk, 305040.</p></bio><email xlink:type="simple">lm.myronovych@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванов</surname><given-names>С. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>S. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 119991.</p></bio><bio xml:lang="en"><p>Moscow 119991.</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Юго-Западный государственный университет</institution></aff><aff xml:lang="en"><institution>Southwest State University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт органической химии им. Н.Д. Зелинского Российской АН</institution></aff><aff xml:lang="en"><institution>N.D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>28</day><month>05</month><year>2021</year></pub-date><volume>88</volume><issue>3</issue><fpage>408</fpage><lpage>414</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Миронович Л.М., Иванов С.М., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Миронович Л.М., Иванов С.М.</copyright-holder><copyright-holder xml:lang="en">Mironovich L.M., Ivanov S.M.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://zhps.ejournal.by/jour/article/view/809">https://zhps.ejournal.by/jour/article/view/809</self-uri><abstract><p>Методом рентгеноструктурного анализа изучены структуры сольвата 7-амино-3-трет-бутил-4-оксо-1,4-дигидропиразоло[5,1-с][1,2,4]триазин-8-карбонитрила и 8-этилкарбоксилата. Молекулы демонстрируют плоскосопряженное гетероциклическое ядро с тенденцией к образованию внутри-и межмолекулярных водородных связей. Рассмотрены длины и углы связей, а также упаковка молекул в кристаллах.</p></abstract><trans-abstract xml:lang="en"><p>The structures of 7-amino-3-tert-butyl-4-oxo-1,4-dihydropyrazolo[5,1-c][1,2,4]triazin-8-carbonitrile and 8-ethyl carboxylate were studied by X-ray crystal diffraction analysis. Both molecules demonstrate planar conjugated heteronucleus with a marked tendency to formation of intra- and intermolecular hydrogen bonds. The molecular bond length and angles in single crystals were investigated.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>пиразоло[5</kwd><kwd>1-с][1</kwd><kwd>2</kwd><kwd>4]триазин</kwd><kwd>водородная связь</kwd><kwd>кристаллическая структура</kwd></kwd-group><kwd-group xml:lang="en"><kwd>pyrazolo[5</kwd><kwd>1-c][1</kwd><kwd>2</kwd><kwd>4]triazine</kwd><kwd>hydrogen bond</kwd><kwd>crystal structure</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">E. K. Voinkov, R. A. Drokin, E. N. Ulomsky, O. N. Chupakhin, V. N. Charushin, V. L. Rusinov. Chem. Heterocycl. Comp., 56, N 10 (2020) 1254—1273, https://doi.org/10.1007/s10593-020-02808-z</mixed-citation><mixed-citation xml:lang="en">E. K. Voinkov, R. A. Drokin, E. N. Ulomsky, O. N. Chupakhin, V. N. Charushin, V. L. Rusinov. Chem. Heterocycl. 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