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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Structural topology of uranyl chromate-dichromates: preparation and crystal structures of [dabcoH2][(UO2)(CrO4)(Cr2O7)](H2O)2, [dmedaH2][(UO2)(CrO4) (Cr2O7)](H2O) and [pyH]4[(UO2)(CrO4)2(Cr2O7)]статья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 8 апреля 2021 г.
- Авторы: Nazarchuk Evgeny V., Charkin Dmitri O., Kalmykov Stepan N., Siidra Oleg I.
- Журнал: Journal of Molecular Structure
- Том: 1229
- Год издания: 2021
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Номер статьи: 129494
- DOI: 10.1016/j.molstruc.2020.129494
- Аннотация: Three new uranyl chromate-dichromates, [dabcoH2][(UO2)(CrO4)(Cr2O7)](H2O)2 (1), [dmedaH2][(UO2)(CrO4)(Cr2O7)](H2O) (2), and [pyH]4[(UO2)(CrO4)2(Cr2O7)] (3) were prepared by evaporation of aqueous solutions under ambient conditions . Compound 1 is triclinic, P, a = 7.2533(15), b = 10.328(2), c = 12.399(2) Å, α = 89.292(4), β = 88.124(4), γ = 78.753(4)°, V = 910.5(3) Å3, R1 = 0.024; 2 is monoclinic, P21/с, a = 7.315(4), b = 14.684(8), c = 15.812(9) Å, β = 99.696(12)°, V = 1674.2(15) Å3, R1 = 0.034; 3 is orthorhombic, Pnma, a = 16.396(4), b = 21.129(6), c = 7.119(2) Å, V = 2466.1(12) Å3, R1 = 0.045. In the crystal structures of 1 and 2, the UO7 bipyramids and CrO4 tetrahedra share vertices to form [(UO2)(CrO4)] chains; the dichromate groups Cr2O7decorate them with formation of [(UO2)(CrO4)(Cr2O7)]2−chains. In 3, polymerization of [(UO2)(CrO4)(Cr2O7)]2−chains produced [(UO2)(CrO4)2(Cr2O7)]4− layers. The protonated organic molecules are located in the interlayer and connect to the inorganic backbones via a system of hydrogen bonds. We discuss the structural peculiarities of uranyl chromate-dichromate complexes and the effects of template nature on their geometrical features.
- Добавил в систему: Чаркин Дмитрий Олегович