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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">chemicallytech</journal-id><journal-title-group><journal-title xml:lang="en">Fine Chemical Technologies</journal-title><trans-title-group xml:lang="ru"><trans-title>Тонкие химические технологии</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2410-6593</issn><issn pub-type="epub">2686-7575</issn><publisher><publisher-name>MIREA – Russian Technological University (RTU MIREA).</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32362/2410-6593-2022-17-2-172-181</article-id><article-id custom-type="elpub" pub-id-type="custom">chemicallytech-1825</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="en"><subject>CHEMISTRY AND TECHNOLOGY OF INORGANIC MATERIALS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ХИМИЯ И ТЕХНОЛОГИЯ НЕОРГАНИЧЕСКИХ МАТЕРИАЛОВ</subject></subj-group></article-categories><title-group><article-title>Comparison of the rare earth complexes iodides and polyiodides with biuret</article-title><trans-title-group xml:lang="ru"><trans-title>Сравнение иодидов и полииодидов комплексов редкоземельных элементов с биуретом</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6164-8650</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Корнилов</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Kornilov</surname><given-names>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Корнилов Александр Денисович, магистрант кафедры технологии биологически активных соединений, медицинской и органической химии им. Н.А. Преображенского</p><p>119571, Москва, пр-т Вернадского, д. 86</p></bio><bio xml:lang="en"><p>Aleksandr D. Kornilov, Master Student, N.A. Preobrazhensky Department of Chemistry and Technology of Biologically Active Compounds, Medicinal and Organic Chemistry</p><p>86, Vernadskogo pr., Moscow, 119571</p></bio><email xlink:type="simple">sashakornilov@bk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6363-5535</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Григорьев</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Grigoriev</surname><given-names>M. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Григорьев Михаил Семёнович, д.х.н., главный научный сотрудник, заведующий лабораторией анализа радиоактивных материалов</p><p>Researсher ID U-8572-2017</p><p>119071, Москва, Ленинский проспект, 31, корп. 4</p></bio><bio xml:lang="en"><p>Mikhail S. Grigoriev, Dr. Sci. (Chem.), Chief Researcher, Head of the Laboratory of Analysis of Radioactive Materials</p><p>31, b. 4, Leninskii pr., Moscow, 119071</p></bio><email xlink:type="simple">grigoriev@ipc.rssi.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2088-5091</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Савинкина</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Savinkina</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Савинкина Елена Владимировна, д.х.н., профессор кафедры неорганической химии им. А.Н. Реформатского</p><p>Scopus Author ID 8419176500; Researсher ID G-2949-2013</p><p>119571, Москва, пр-т Вернадского, д. 86</p></bio><bio xml:lang="en"><p>Elena V. Savinkina, Dr. Sci. (Chem.), Professor, A.N. Reformatskii Department of Inorganic Chemistry</p><p>Scopus Author ID 8419176500; Researсher ID G-2949-2013</p><p>86, Vernadskogo pr., Moscow, 119571</p></bio><email xlink:type="simple">savinkina@mirea.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>МИРЭА – Российский технологический университет (Институт тонких химических технологий им. М.В. Ломоносова)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>MIREA – Russian Technological University (M.V. Lomonosov Institute of Fine Chemical Technologies)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт физической химии и электрохимии им. А.Н. Фрумкина Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>01</day><month>06</month><year>2022</year></pub-date><volume>17</volume><issue>2</issue><fpage>172</fpage><lpage>181</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Kornilov A.D., Grigoriev M.S., Savinkina E.V., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Корнилов А.Д., Григорьев М.С., Савинкина Е.В.</copyright-holder><copyright-holder xml:lang="en">Kornilov A.D., Grigoriev M.S., Savinkina E.V.</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://www.finechem-mirea.ru/jour/article/view/1825">https://www.finechem-mirea.ru/jour/article/view/1825</self-uri><abstract><sec><title>Objectives</title><p>Objectives. Currently, several hundred polyiodide compounds have been synthesized and structurally characterized, but so far, no formation patterns for certain polyiodide ions have been revealed. The purpose of this work is to continue the search for formation regularities of polyiodides, including polyiodides of lanthanide complexes.</p></sec><sec><title>Methods</title><p>Methods. Iodide and polyiodide of samarium complexes with biuret (BU), [Sm(BU)4]I3·BU·2H2O and [Sm(BU)4][I5][I]2, were first synthesized and characterized by X-ray diffraction analysis and infrared spectroscopy, respectively.</p></sec><sec><title>Results</title><p>Results. The obtained compounds complement the row of isostructural lanthanide (La–Gd) complexes. Structures of corresponding iodides and polyiodides were compared in detail. Both types of the compounds contain complex cations of the same composition; however, their structures differ significantly. The central atom coordination polyhedron can be described as a distorted square antiprism and a distorted dodecahedron, respectively. Even greater differences are observed in the outer sphere of complex compounds. The iodide compound crystals contain uncoordinated iodide ions, a biuret molecule and two water molecules. In the polyiodide compound, cations together with isolated I– ions form a three-dimensional framework with the channels, in which linear I5– ions are united in infinite linear chains by weak interactions.</p></sec><sec><title>Conclusions</title><p>Conclusions. The replacement of an iodide ion with a polyiodide ion in complex compounds of lanthanides with BU leads to changes in both the inner sphere and the outer sphere of the cation complex, including the supramolecular level. The presence of iodine atom infinite linear chains in polyiodides allows expecting the presence of anisotropic electrical conductivity along this direction.</p></sec></abstract><trans-abstract xml:lang="ru"><sec><title>Цели</title><p>Цели. В настоящее время синтезировано и структурно охарактеризовано несколько сотен полииодидных соединений, однако до сих пор не выявлено закономерностей образования тех или иных полииодид-ионов. Целью настоящей работы является продолжение поиска закономерностей образования полииодидов, в том числе полииодидов комплексов лантанидов.</p></sec><sec><title>Методы</title><p>Методы. Впервые синтезированы и охарактеризованы методами рентгеноструктурного анализа и инфракрасной спектроскопии, соответственно, иодид и полииодид комплексов самария с биуретом (BU) состава [Sm(BU)4]I3·BU·2H2O и [Sm(BU)4][I5][I]2.</p></sec><sec><title>Результаты</title><p>Результаты. Полученные соединения пополняют ряд изоструктурных комплексов лантанидов от La до Gd. Проведено детальное сравнение структур иодидных и полииодидных соединений. Установлено, что оба типа соединений содержат комплексный катион одного состава, однако его строение существенно различается в иодидных и полииодидных соединениях. Координационный полиэдр центрального атома можно описать как искаженную квадратную антипризму и искаженный додекаэдр, соответственно. Еще большие различия наблюдаются во внешней сфере комплексных соединений. Кристаллы иодидного соединения содержат некоординированные иодид-ионы, молекулу BU и две молекулы воды. В полииодидном соединении катионы вместе с одиночными ионами образуют трехмерный каркас, в каналах которого находятся линейные ионы, объединенные слабыми взаимодействиями в бесконечные линейные цепи.</p></sec><sec><title>Выводы</title><p>Выводы. Замена иодид-иона на полииодид-ион в комплексных соединениях редкоземельных элементов с BU приводит к изменению как внутренней сферы катионного комплекса, так и внешней сферы, включая супрамолекулярный уровень. Присутствие бесконечных линейных цепей из атомов иода в структуре полииодидов комплексов лантанидов с BU позволяет ожидать наличие анизотропной электропроводности вдоль этого направления.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>лантаниды</kwd><kwd>самарий</kwd><kwd>иодид</kwd><kwd>полииодид</kwd><kwd>кристаллическая структура</kwd><kwd>анизотропия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>lanthanides</kwd><kwd>samarium</kwd><kwd>iodide</kwd><kwd>polyiodide</kwd><kwd>crystal structure</kwd><kwd>anisotropy</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена с использованием оборудования ЦКП РТУ МИРЭА и ЦКП ФМИ ИФХЭ РАН при поддержке Минобрнауки России.</funding-statement><funding-statement xml:lang="en">The study was performed using the equipment of the Centers for Collective Use of the MIREA – Rusian Technological University and Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, with the support of the Ministry of Science and Higher Education of the Russian Federation.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Svensson P.H., Kloo L. 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