On the crystal structure of tribarium gallate (Ba3Ga2O6)

被引：0

作者：

Kahlenberg, V ^{[1
]}

机构：

[1] Univ Bremen, Facbereich Geowissensch Kristallog, D-28359 Bremen, Germany

来源：

CRYSTAL RESEARCH AND TECHNOLOGY | 2001年 / 36卷 / 03期

关键词：

crystal structure; tribariumgallate;

D O I：

10.1002/1521-4079(200103)36:3<319::AID-CRAT319>3.0.CO;2-5

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Single crystals of tribarium gallate (Ba3Ga2O6) have been synthesized from a melt with composition 70 mol.% BaO and 30 mol.% Ga2O3 in the temperature range between 1200 degreesC and 1400 degreesC. The compound adopts space group Pa (3) over bar With a = 16.746(9) Angstrom and Z = 24 formula units per unit cell. The refinement of the atomic parameters resulted in a residual of RI = 0.040 (wR2 = 0.102) for 1157 observed reflections (I >2 sigma (1)). Ba3Ga2O6 belongs to the group of cyclo-gallates and is closely related to K4SrGe3O9. Main building element are isolated, highly puckered, twelve-membered rings build by [GaO4]-tetrahedra. Charge balance is achieved by incorporation of Ba ions in the voids between the rings. The coordination number of the alkaline earth atoms is six, eight and nine, respectively.

引用

页码：319 / 326

页数：8

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