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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">vuzbiochemi</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Прикладная химия и биотехнология</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of Universities. Applied Chemistry and Biotechnology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2227-2925</issn><issn pub-type="epub">2500-1558</issn><publisher><publisher-name>ИРНИТУ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21285/2227-2925-2019-9-2-183-193</article-id><article-id custom-type="elpub" pub-id-type="custom">vuzbiochemi-189</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>ХИМИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CHEMICAL SCIENCES</subject></subj-group></article-categories><title-group><article-title>Исследование молекулярного строения по спектрам ЯМР высокого разрешения, трансформированным парамагнитными комплексами</article-title><trans-title-group xml:lang="en"><trans-title>Use of high-resolution NMR spectra transformed by paramagnetic complexes for studying molecular structure</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>Воронов</surname><given-names>В. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Voronov</surname><given-names>V. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.х.н., профессор,</p><p>г. Иркутск</p></bio><bio xml:lang="en"><p>Dr. Sci. (Chemistry), Professor,</p><p>Irkutsk</p></bio><email xlink:type="simple">vladim.voronov1945@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Иркутский национальный исследовательский технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Irkutsk National Research Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>27</day><month>09</month><year>2019</year></pub-date><volume>9</volume><issue>2</issue><fpage>183</fpage><lpage>193</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Воронов В.К., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Воронов В.К.</copyright-holder><copyright-holder xml:lang="en">Voronov V.K.</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://vuzbiochemi.elpub.ru/jour/article/view/189">https://vuzbiochemi.elpub.ru/jour/article/view/189</self-uri><abstract><p>В работе изложены общие представления об особенностях ядерного магнитного резонанса парамагнитных молекул. Указанные особенности являются следствием сверхтонкого или электронного взаимодействия между неспаренными электронами, локализованные на координирующем ионе, и резонирующими ядрами. Это приводит к парамагнитному уширению, а также к парамагнитным сдвигам (контактным и псевдоконтактным) резонансных линий в спектрах ядерного магнитного резонанса. Контактный сдвиг наблюдается в тех случаях, когда вероятность пребывания неспаренного электрона в месте расположения резонирующего ядра отлична от нуля. Следовательно, эти сдвиги являются источником информации о характере связи металл – лиганд, а также об электронной структуре лигандов. Псевдоконтактные сдвиги характеризуют пространственную структуру молекулы, что обусловливает их использование при решении различного рода структурных задач. Рассматриваются пионерские работы, характеризующие специфику трансформации спектров ядерного магнитного резонанса добавками парамагнитных комплексов элементов группы железа на примере комплексов кобальта и никеля, а также редкоземельных элементов на примере комплекса европия. Представлены основные положения метода парамагнитных добавок, использование которого позволяет преодолеть трудности, связанные с большим парамагнитным уширением резонансных линий в спектрах ядерного магнитного резонанса высокого разрешения. Показано, что из элементов подгруппы железа именно парамагнитный ион Со2+ можно использовать в качестве эффективного сдвигающего реагента. В ряде случаев подходящим для этих целей может оказаться также и ион Ni2+. Приведены условия записи спектров ЯМР образцов, содержащих парамагнитные добавки, используемые при этом растворители, варьирование температуры исследуемых образцов в условиях детектирования резонансных сигналов. </p></abstract><trans-abstract xml:lang="en"><p>This paper provides an overview of the features specific to the nuclear magnetic resonance (NMR) of paramagnetic molecules. These features can be attributed to the hyperfine or electronic coupling between unpaired electrons, which are localised on the coordinating ion, and resonant nuclei. That leads both to the paramagnetic broadening and to the paramagnetic shifts (contact and pseudo-contact ones) of resonance lines in the NMR spectra. A contact shift is observed when the probability of an unpaired electron location in the place of a resonant nucleus differs from zero. Therefore, these shifts constitute a source of information on the nature of the metal-ligand bond as well as on the ligand electronic structure. Pseudo-contact shifts characterise the spatial structure of the molecule, thus being important for solving various structural problems. This paper covers pioneering works describing the specifics of the NMR spectra transformed by adding paramagnetic complexes of iron-group elements on the example of cobalt and nickel complexes, as well as complexes of rare-earth elements on the example of europium. We present main features of the paramagnetic additives method, allowing resolution of difficulties associated with large paramagnetic broadening of resonance lines in high-resolution NMR spectra. Of iron-group elements, a paramagnetic ion Co2+ is shown to be an effective shift reagent. In some cases, a Ni2+ ion may also be used for this purpose. The paper covers conditions for recording the NMR spectra of samples containing paramagnetic additives; solvents used for this purpose; as well as temperature variations of the studied samples in the context of resonance signal detection. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>спектроскопия ЯМР</kwd><kwd>сверхтонкое взаимодействие</kwd><kwd>парамагнитные сдвиги</kwd></kwd-group><kwd-group xml:lang="en"><kwd>NMR spectroscopy</kwd><kwd>hyperfine coupling</kwd><kwd>paramagnetic shifts</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">Попл Дж., Шнейдер В., Бернстейн Г. Спектры ядерного магнитного резонанса высокого разрешения / пер. с англ. В.Ф. Быстрова [и др.]. М.: Иностранная литература, 1962. 592 с.</mixed-citation><mixed-citation xml:lang="en">Pople J.A., Schneider W.G., Bernstein H.J. High-resolution nuclear magnetic resonance. New York: Mc-Graw-Hill, 1959. 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