SINGLE-CRYSTAL STRUCTURE OF CS3HTI4O4(SIO4)(3)CENTER-DOT-4H(2)O, A TITANOSILICATE PHARMACOSIDERITE ANALOG

被引：65

作者：

HARRISON, WTA ^{[1
]}

GIER, TE ^{[1
]}

STUCKY, GD ^{[1
]}

机构：

[1] UNIV CALIF SANTA BARBARA,DEPT CHEM,SANTA BARBARA,CA 93106

来源：

ZEOLITES | 1995年 / 15卷 / 05期

关键词：

TITANOSILICATE; CRYSTAL STRUCTURE;

D O I：

10.1016/0144-2449(95)00021-W

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the high-temperature/high-pressure synthesis and single-crystal structure of Cs3HTi4O4(SiO4)(3) . 4H(2)O, which is a synthetic isostructure of the mineral species pharmacosiderite. The Cs3HTi4O4(SiO4)(3) . 4H(2)O framework is built up from TiO6 octahedra, sharing faces to form characteristic Ti4O4 cubes, and Si atoms (as SiO4 tetrahedra), linked via Ti - O - Ti and Ti - O - Si bonds. Extraframework Cs+ species occupy sites slightly displaced from the centers of the intercage 8-ring windows, and also make Cs OH2 bonds, to the water molecules, which occupy the spherical cages. Crystal data: Cs3HTi4O4(SiO4)(3) . 4H(2)O, M(r) = 1003.63, cubic, space group <P(4)over bar 3m> (no. 215), a = 7.8301 (9) Angstrom, V = 480.1 Angstrom(3), Z = 1, R = 3.86%, R(w) = 4.68% [211 observed reflections with l > 3 sigma(l)].

引用

页码：408 / 412

页数：5

共 19 条

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