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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of General Chemistry</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of General Chemistry</journal-title><trans-title-group xml:lang="ru"><trans-title>Журнал общей химии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0044-460X</issn><issn publication-format="electronic">3034-5596</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">688764</article-id><article-id pub-id-type="doi">10.31857/S0044460X25050075</article-id><article-id pub-id-type="edn">FJAOMX</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Tensimetric study of [ClSb{Cr(CO) <sub>5</sub>}<sub>2</sub>]<sub>2</sub> and its reaction with pyridine</article-title><trans-title-group xml:lang="ru"><trans-title>Тензиметрическое исследование [ClSb{Cr(CO)<sub>5</sub>}<sub>2</sub>]<sub>2</sub> и его взаимодействия с пиридином</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Schevchenko</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Шевченко</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>a.y.timoshkin@spbu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1078-960X</contrib-id><name-alternatives><name xml:lang="en"><surname>Kazakov</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Казаков</surname><given-names>Игорь Владимирович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>a.y.timoshkin@spbu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Rummel</surname><given-names>L.</given-names></name><name xml:lang="ru"><surname>Руммель</surname><given-names>Л.</given-names></name></name-alternatives><address><country country="DE">Germany</country></address><bio xml:lang="en"><p>Institut für Anorganische Chemie</p></bio><bio xml:lang="ru"><p>Институт неорганической химии<italic> </italic></p></bio><email>a.y.timoshkin@spbu.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Seidl</surname><given-names>M.</given-names></name><name xml:lang="ru"><surname>Зайдль</surname><given-names>М.</given-names></name></name-alternatives><address><country country="DE">Germany</country></address><bio xml:lang="en"><p>Institut für Anorganische Chemie</p></bio><bio xml:lang="ru"><p>Институт неорганической химии<italic> </italic></p></bio><email>a.y.timoshkin@spbu.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1932-6647</contrib-id><name-alternatives><name xml:lang="en"><surname>Timoshkin</surname><given-names>A. Y.</given-names></name><name xml:lang="ru"><surname>Тимошкин</surname><given-names>Алексей Юрьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>a.y.timoshkin@spbu.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">St. Petersburg State University</institution></aff><aff><institution xml:lang="ru">Санкт-Петербургский государственный университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Universität Regensburg</institution></aff><aff><institution xml:lang="ru">Университет Регенсбурга</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-06-15" publication-format="electronic"><day>15</day><month>06</month><year>2025</year></pub-date><volume>95</volume><issue>5-6</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>224</fpage><lpage>230</lpage><history><date date-type="received" iso-8601-date="2025-08-07"><day>07</day><month>08</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-08-07"><day>07</day><month>08</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://transsyst.ru/0044-460X/article/view/688764">https://transsyst.ru/0044-460X/article/view/688764</self-uri><abstract xml:lang="en"><p>Thermal stability of [ClSb{Cr(CO)<sub>5</sub>}<sub>2</sub>]<sub>2</sub> and its reaction with pyridine was studied by static tensimetry method with membrane null-manometer. [ClSb{Cr(CO)<sub>5</sub>}<sub>2</sub>]<sub>2</sub> is thermally unstable and decomposes at 50–80°C with the formation of carbon monooxide and chromium hexacarbonyl. Upon reaction with pyridine on heating instead of the expected ClSb{Cr(CO)<sub>5</sub>}<sub>2</sub>∙Py formation of СO, Cr(CO)<sub>6</sub>, Cr(CO)<sub>5</sub>∙Py, antimony and supposedly complex of chromium dichloride with pyridine are formed.</p></abstract><trans-abstract xml:lang="ru"><p>Термическое поведение [ClSb{Cr(CO)<sub>5</sub>}<sub>2</sub>]<sub>2</sub> и его реакция с пиридином исследованы статическим тензиметрическим методом с мембранным нуль-манометром. Показано, что соединение является термически неустойчивым и разлагается при 50–80°С с выделением летучих монооксида углерода и гексакарбонила хрома. При реакции с пиридином при нагревании вместо ожидаемого комплекса ClSb{Cr(CO)<sub>5</sub>}<sub>2</sub>∙Py образуется Cr(CO)<sub>5</sub>∙Py, Cr(CO)<sub>6</sub>, CO и, предположительно, комплекс CrCl<sub>2</sub> с пиридином.</p></trans-abstract><kwd-group xml:lang="en"><kwd>antimony</kwd><kwd>chromium carbonyl</kwd><kwd>complexes in low oxidation state</kwd><kwd>pyridine</kwd><kwd>thermal decomposition</kwd><kwd>tensimetry</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>сурьма</kwd><kwd>карбонил хрома</kwd><kwd>комплексы в низких степенях окисления</kwd><kwd>пиридин</kwd><kwd>термическое разложение</kwd><kwd>тензиметрия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Weber U., Zsolnai L., Huttner G. // J. Organomet. Chem. 1984. Vol. 260. P. 281. doi 10.1016/S0022-328X(00)99477-4</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Sigwarth B., Weber U., Zsolnai L., Huttner G. // Chem. 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