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полный	информационный	краткий

Поисковый запрос: (<.>K=lanthanide(III) 2-thiobarbiturates<.>)

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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Golovnev N. N., Molokeev M. S., Sterkhova, I., V
Заглавие : Structure and Thermal Decomposition of Nd(III), Gd(III) and Tb(III) 2-Thiobarbiturates
Коллективы : Ministry of Education and Science of the Russian FederationMinistry of Education and Science, Russian Federation [4.7666.2017/BCh]
Место публикации : Russ. J. Inorg. Chem. - 2019. - Vol. 64, Is. 9. - P.1146-1151. - ISSN 0036-0236, DOI 10.1134/S0036023619090134. - ISSN 1531-8613(eISSN)
Примечания : Cited References: 21. - The work was performed as part of the State Assignment of the Ministry of Education and Science of the Russian Federation to the Siberian Federal University in 2017-2019. (4.7666.2017/BCh). The powder X-ray diffraction studies were performed using the equipment at the Baikal and Krasnoyarsk Centers for Collective Use of the Siberian Branch of the Russian Academy of Sciences.
Предметные рубрики: CRYSTAL-STRUCTURE
TRANSFORMATION
Аннотация: Complexes [Ln2(H2O)6(μ2-Htba−O,O')4(Htba−O)2]n (Ln = Tb (I), Gd (II), Nd (III); and H2tba is thiobarbituric acid) have been synthesized. According to single-crystal X-ray diffraction, monoclinic crystals of I–III are isostructural. They contain three independent Htba– ions (one terminal and two bridging) and two independent Ln3+ ions. Six Htba– ligands (two terminal and four O,O'-bridging) and two water molecules are coordinated to one Ln3+ ion, and four O,O'-bridging Htba– ions and four water molecules are coordinated to the other Ln3+ ion to form square antiprisms. The antiprisms are bound by Htba– bridging ions into layers. Numerous hydrogen bonds and π–π interactions stabilize the structures of the compounds. Thermal decomposition of complexes I and II performed in air results in mixtures of oxides and oxysulfates, whereas complex III forms Nd2O2SO4.
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