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Cs3LiZn2(WO4)4 and Rb3Li2Ga(MoO4)4, different filled derivatives of cation-deficient Cs6Zn5(MoO4)8 structureстатья
Статья опубликована в высокорейтинговом журнале
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: 19 декабря 2017 г.
- Авторы: Solodovnikov Sergey F., Solodovnikova Zoya A., Zolotova Evgeniya S., Kadyrova Yulia M., Savina Aleksandra A., Stefanovich Sergey Yu, Khaikina Elena G.
- Журнал: ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY
- Том: 73
- Номер: 11
- Год издания: 2017
- Издательство: John Wiley & Sons Inc.
- Местоположение издательства: United States
- Первая страница: 946
- Последняя страница: 952
- DOI: 10.1107/S205322961701378X
- Аннотация: Two new compounds, Cs3LiZn2(WO4)4 and Rb3Li2Ga(MoO4)4, belong to the structural family of Cs6Zn5(MoO4)8(space group I 3d, Z = 4), with a partially incomplete (Zn5/6□1/6) position. In Cs3LiZn2(WO4)4, this position is fully statistically occupied by (Zn2/3Li1/3), and in Rb3Li2Ga(MoO4)4, the 2Li + Ga atoms are completely ordered in two distinct sites of the space group I 2d (Z = 4). In the same way, the crystallographically equivalent A+ cations (A = Cs, Rb) in Cs6Zn5(MoO4)8, Cs3LiZn2(WO4)4 and isostructural A3LiZn2(MoO4)4 and Cs3LiCo2(MoO4)4 are divided into two sites in Rb3Li2Ga(MoO4)4, as in other isostructural A3Li2R(MoO4)4 compounds (AR = TlAl, RbAl, CsAl, CsGa, CsFe). In the title structures, the WO4 and (Zn,Li)O4 or LiO4, GaO4 and MoO4 tetra¬hedra share corners to form open three-dimensional frameworks with the caesium or rubidium ions occupying cubocta¬hedral cavities. The tetra¬hedral frameworks are related to that of mayenite 12CaO•7Al2O3 and isotypic compounds. Comparison of isostructural Cs3MZn2(MoO4)4 (M = Li, Na, Ag) and Cs6Zn5(MoO4)8 shows a decrease of the cubic lattice parameter and an increase in thermal stability with the filling of the vacancies by Li+ in the Zn position of the Cs6Zn5(MoO4)8structure, while filling of the cation vacancies by larger Na+ or Ag+ ions plays a destabilizing role. The series A3Li2R(MoO4)4 shows second harmonic generation effects compatible with that of β′-Gd2(MoO4)3 and may be considered as nonlinear optical materials with a modest nonlinearity
- Добавил в систему: Стефанович Сергей Юрьевич