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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 Inorganic Chemistry</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Inorganic Chemistry</journal-title><trans-title-group xml:lang="ru"><trans-title>Журнал неорганической химии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0044-457X</issn><issn publication-format="electronic">3034-560X</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">690766</article-id><article-id pub-id-type="doi">10.31857/S0044457X25080087</article-id><article-id pub-id-type="edn">jjqjqb</article-id><article-categories><subj-group subj-group-type="toc-heading"><subject>КООРДИНАЦИОННЫЕ СОЕДИНЕНИЯ</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">Framework tetrarhodanomercurate complexes of Mn(II), Fe(II), Cd(II) with nicotinamide: synthesis and crystal structure</article-title><trans-title-group xml:lang="ru"><trans-title>Каркасные тетрароданомеркуратные комплексы Mn(II), Fe(II), Cd(II) с никотинамидом: синтез и кристаллическое строение</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Barantsev</surname><given-names>D. A.</given-names></name><name xml:lang="ru"><surname>Баранцев</surname><given-names>Д. А.</given-names></name></name-alternatives><email>ctg.htnv@kuzstu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pervukhina</surname><given-names>N. V.</given-names></name><name xml:lang="ru"><surname>Первухина</surname><given-names>Н. В.</given-names></name></name-alternatives><email>ctg.htnv@kuzstu.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kuratieva</surname><given-names>N. V.</given-names></name><name xml:lang="ru"><surname>Куратьева</surname><given-names>Н. В.</given-names></name></name-alternatives><email>ctg.htnv@kuzstu.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Cherkasova</surname><given-names>T. G.</given-names></name><name xml:lang="ru"><surname>Черкасова</surname><given-names>Т. Г.</given-names></name></name-alternatives><email>ctg.htnv@kuzstu.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Kuzbass State Technical University named after T.F. Gorbachev</institution></aff><aff><institution xml:lang="ru">Кузбасский государственный технический университет им. Т.Ф. Горбачева</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Nikolaev Institute of Inorganic Chemistry of SB RAS (NIIC SB RAS)</institution></aff><aff><institution xml:lang="ru">Институт неорганической химии им. А.В. Николаева СО РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-08-15" publication-format="electronic"><day>15</day><month>08</month><year>2025</year></pub-date><volume>70</volume><issue>8</issue><issue-title xml:lang="en">VOL 70, NO8 (2025)</issue-title><issue-title xml:lang="ru">ТОМ 70, №8 (2025)</issue-title><fpage>1046</fpage><lpage>1050</lpage><history><date date-type="received" iso-8601-date="2025-09-21"><day>21</day><month>09</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/0044-457X/article/view/690766">https://transsyst.ru/0044-457X/article/view/690766</self-uri><abstract xml:lang="en"><p>New bimetallic complexes of the composition [MHg(C<sub>6</sub>H<sub>6</sub>N<sub>2</sub>O)<sub>2</sub> (SCN)<sub>4</sub>] have been synthesized, where M = Mn (I), Fe (II), Cd (III); C<sub>6</sub>H<sub>6</sub>N<sub>2</sub>O is nicotinamide (NA). The compounds were obtained from aqueous solutions and studied by CHNS/O analysis, IR spectroscopy, inductively coupled plasma optical emission spectrometry (ICP-OES) and X-ray diffraction analysis (XRD). Compounds I–III are isostructural and crystallize in the monoclinic syngony (space group C2/c). The coordination environment of the M atom is formed by two donor nitrogen atoms of two monodentately coordinated NA and four nitrogen atoms of the SCN groups, which form bridges between the M<sup>2+</sup> and Hg<sup>2+</sup> ions, connecting them into a three-dimensional framework. Hg<sup>2+</sup> ions have a tetrahedral coordination environment consisting of four S atoms of four SCN groups.</p></abstract><trans-abstract xml:lang="ru"><p>Синтезированы новые биметаллические комплексы состава [MHg(C<sub>6</sub>H<sub>6</sub>N<sub>2</sub>O)<sub>2</sub>(SCN)<sub>4</sub>], где M = Mn<sup>2+</sup> (I), Fe<sup>2+</sup> (II), Cd<sup>2+</sup> (III), C<sub>6</sub>H<sub>6</sub>N<sub>2</sub>O — никотинамид (NA). Вещества, синтезированные из водных растворов, охарактеризованы методами элементного (CHNS/O) и рентгеноструктурного анализа, ИК-спектроскопии и оптической эмиссионной спектрометрии (ИСП-ОЭС). Соединения I–III изоструктурны и кристаллизуются в моноклинной сингонии (пр. гр. C2/c). Координационное окружение иона М<sup>2+</sup> образовано двумя донорными атомами азота NA, координированного монодентатно, и четырьмя атомами азота роданидных групп, образующих мостики между ионами M<sup>2+</sup> и Hg<sup>2+</sup>,<sup> </sup>соединяя их в трехмерный каркас. Ионы Hg<sup>2+ </sup>имеют тетраэдрическое координационное окружение, состоящее из четырех атомов S четырех SCN-групп.</p></trans-abstract><kwd-group xml:lang="en"><kwd>coordination polymers</kwd><kwd>d-metals</kwd><kwd>nicotinamide</kwd><kwd>IR</kwd><kwd>X-ray structural analysis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>каркасные роданомеркураты</kwd><kwd>переходные металлы</kwd><kwd>никотинамид</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Li S., Li P., Tian Y. et al. // Bioorg. Chem. 2024. V. 153. P. 107974. https://doi.org/10.1016/j.bioorg.2024.107974</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Song Y.H., Bian O., Wang F. et al. // Coord. Chem. Rev. 2025. V. 524. P. 216299. https://doi.org/10.1016/j.ccr.2024.216299</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Zhou N., Guo X., Shao X. // J. Lumin. 2022. V. 251. 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