Structure and Vibrational Spectra of Heteropolycompounds with the Composition E5PMo10V2O40·nH2O (E=H, Na). Crystal Structure of Na5PMo10V2O40·15H2O Научная публикация
Журнал |
Journal of Structural Chemistry
ISSN: 0022-4766 , E-ISSN: 1573-8779 |
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Вых. Данные | Год: 1981, Том: 22, Номер: 6, Страницы: 831-839 Страниц : 9 DOI: 10.1007/BF00746592 | ||||
Ключевые слова | Physical Chemistry; Inorganic Chemistry; Vibrational Spectrum | ||||
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Реферат:
A complete x-ray structural analysis of crystals of Na5PMo10. V2040. 15H20 (I) has been carried out. The crystals of this salt belong to the triclinic system: a =11.618, b=12.373, c=17.936 A, alfa=82.5, beta =84.5, gamma=65.0 , Z =2, space group P1. The heteropolyanion in compound I has the Keggin structure with symmetry 43m. In contrast to the corresponding acid, the water molecules in compound I do not form an independent framework, but take part in its formation together with Na + and the anion (HFAn); the Na + contact is made chiefly with O(terminal) of the
HPAn. The vibrational spectra (infrared and Raman) of the solutions and crystalline powders have been studied, and spectral indications of two different forms of cation-HPAn interaction have been detected: 1) with O(bridging); in this case the HPAn has a pseudo-Keggin structure; 2) chiefly with O(terminal); in this case the HFAn has the Keggin structure. The most significant criterion of this interaction is the relative intensity (relative to the band at 997 cm -1) of
the band at 112 cm -1, which is interpreted as rotational, interacting with the bending vibrations of the HPAn. It has been shown that the vibrational symmetry of [PMo10V2040] 5- in the crystals and solution is lower than the crystallographic symmetry (Oh, Td). The HPAn preserves the pseudo-Keggin structure in acidic aqueous solutions, but is converted into the Keggin structure under the conditions of crystallization of the Na salts.
Библиографическая ссылка:
Sergienko V.S.
, Detusheva L.G.
, Yurchenko E.N.
, Porai-Koshits M.A.
Structure and Vibrational Spectra of Heteropolycompounds with the Composition E5PMo10V2O40·nH2O (E=H, Na). Crystal Structure of Na5PMo10V2O40·15H2O
Journal of Structural Chemistry. 1981. V.22. N6. P.831-839. DOI: 10.1007/BF00746592 WOS Scopus РИНЦ
Structure and Vibrational Spectra of Heteropolycompounds with the Composition E5PMo10V2O40·nH2O (E=H, Na). Crystal Structure of Na5PMo10V2O40·15H2O
Journal of Structural Chemistry. 1981. V.22. N6. P.831-839. DOI: 10.1007/BF00746592 WOS Scopus РИНЦ
Оригинальная:
Сергиенко В.С.
, Детушева Л.Г.
, Юрченко Э.Н.
, Порай-Кошиц М.А.
Строение и колебательные спектры гетерополисоединений состава Э5PMo10V2O40⋅nH2O (Э = Н, Na). Кристаллическая структура Na5PMo10V2O40·15Н2O
Журнал структурной химии. 1981. Т.22. №6. С.37-48. РИНЦ
Строение и колебательные спектры гетерополисоединений состава Э5PMo10V2O40⋅nH2O (Э = Н, Na). Кристаллическая структура Na5PMo10V2O40·15Н2O
Журнал структурной химии. 1981. Т.22. №6. С.37-48. РИНЦ
Даты:
Поступила в редакцию: | 16 мар. 1981 г. |
Опубликована в печати: | 1 нояб. 1981 г. |
Идентификаторы БД:
Web of science | WOS:A1981NV02700006 |
Scopus | 2-s2.0-34250237131 |
РИНЦ | 30842206 |
OpenAlex | W2074489922 |