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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">kemsu</journal-id><journal-title-group><journal-title xml:lang="ru">СибСкрипт</journal-title><trans-title-group xml:lang="en"><trans-title>SibScript</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2949-2122</issn><issn pub-type="epub">2949-2092</issn><publisher><publisher-name>Kemerovo State University</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">kemsu-1259</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>История и археология</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>History and archeology</subject></subj-group></article-categories><title-group><article-title>ЭЛЕКТРОННОЕ СТРОЕНИЕ И ХИМИЧЕСКАЯ СВЯЗЬ В СУПЕРТВЕРДОМ cp-BC2N</article-title><trans-title-group xml:lang="en"><trans-title>ELECTRONIC STRUCTURE AND CHEMICAL BONDING IN SUPERHARD cp-BC2N</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>Басалаев</surname><given-names>Ю. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Basalaev</surname><given-names>Yu. M.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">ymbas@kemsu.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>Поплавной</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Poplavnoi</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">popl@kemsu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Кемеровский государственный университет<country>Россия</country></aff><aff xml:lang="en">Kemerovo State University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>23</day><month>03</month><year>2016</year></pub-date><volume>1</volume><issue>2-1</issue><fpage>48</fpage><lpage>52</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Басалаев Ю.М., Поплавной А.С., 2015</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="ru">Басалаев Ю.М., Поплавной А.С.</copyright-holder><copyright-holder xml:lang="en">Basalaev Y.M., Poplavnoi A.S.</copyright-holder><license 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.sibscript.ru/jour/article/view/1259">https://www.sibscript.ru/jour/article/view/1259</self-uri><abstract><p>На основе первопринципного метода функционала плотности вычислены зонный спектр, полная и деформационная электронные плотности, атомные заряды супертвердого соединения BC2N в структуре халькопирита. Проанализирован парциальный состав валентной зоны. Вблизи дна зоны проводимости имеются конкурирующие минимумы, при этом расположение абсолютного минимума зависит от используемого кода вычислений (PWscf или CRYSTAL09), что не позволяет отнести cp-BC2N к прямозонному или непрямозонному кристаллу. Характер контуров полной и деформационной плотностей показывает ионно-ковалентный тип химической связи, при этом связь C-N оказывается более прочной, чем B-C.</p></abstract><trans-abstract xml:lang="en"><p>Band spectrum, full and deformational electronic densities, atomic charges of superhard compound BC2N in a chalcopyrite structure have been calculated in terms of first principles density functional theory. A partial composition of the valence band has been analysed. There are some competing minima within the band bottom, the absolute minimum location depending on the calculation code applied (PWscf or CRYSTAL09), which does not allow cp-BC2N to be a direct band crystal or indirect band one. The nature of full and deformational density contours is of ionic-covalent type of the chemical bonding and the C-N bond appears to be stronger than that of B-C.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>: халькопирит</kwd><kwd>сверхтвердый</kwd><kwd>электронное строение</kwd><kwd>BC2N</kwd><kwd>химическая связь</kwd></kwd-group><kwd-group xml:lang="en"><kwd>chalcopyrite</kwd><kwd>superhard</kwd><kwd>electronic structure</kwd><kwd>BC2N</kwd><kwd>chemical bonding</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Министерство образования и науки Российской Федерации</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">Басалаев Ю. М., Поплавной А. С. Электронное строение тройных алмазоподобных соединений со структурой халькопирита. Кемерово; М., 2009. 226 с.</mixed-citation><mixed-citation xml:lang="en">Басалаев Ю. М., Поплавной А. С. 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