Structure of the compounds La3AlGe5O16, La3GaGe5O16 and Ce3GaGe5O16

被引：16

作者：

Adiwidjaja, G ^{[1
]}

Broker, M ^{[1
]}

Claus, C ^{[1
]}

Friese, K ^{[1
]}

Klaska, KH ^{[1
]}

Jarchow, O ^{[1
]}

Ruks, M ^{[1
]}

Wozniak, I ^{[1
]}

机构：

[1] Univ Hamburg, Mineral Petrog Inst, D-20146 Hamburg, Germany

来源：

ZEITSCHRIFT FUR KRISTALLOGRAPHIE | 1998年 / 213卷 / 04期

关键词：

D O I：

10.1524/zkri.1998.213.4.223

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Hydrothermal synthesis in the systems LaCl3 (CeCl3)-Al(OH)(3) (Ga2O3)-GeO2 yielded crystals of composition La3AlGe5O16, La3GaGe5O16 is and Ce3GaGe5O16, respectively. The syntheses were carried out at temperatures of 1023 K-1073 K under pressures of 1000 bar. The space group of the three substances was determined as P (1) over bar with the pseudosymmetry P2(1)/(c). All compounds are isostructural. The lattice parameters are a = 4.794(4)Angstrom, b = 8.102(8)Angstrom, c = 15.722(8)Angstrom, alpha = 90.42(3)degrees, beta = 94.46(2)degrees, gamma = 89.91(2)degrees for La3AlGe5O16, a = 4.827(4)Angstrom, b = 8.090(4)Angstrom, c = 15.707(6)Angstrom, alpha = 90.76(5)degrees, beta = 94.01(7)degrees, gamma = 90.01(7)degrees for La3GaGe5O16 and a = 4.768(7)Angstrom, b = 8.088(5)Angstrom, c = 15.600(2)Angstrom, alpha = 90.55(4)degrees, beta = 94.46(4)degrees, gamma = 89.63(4)degrees for Ce3AlGe5O16. There are two formula units in the unit cell.

引用

页码：223 / 227

页数：5

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