PREPARATION AND CRYSTAL-STRUCTURE OF ND4TI9O24

被引：12

作者：

HUBNER, N ^{[1
]}

GRUEHN, R ^{[1
]}

机构：

[1] UNIV GIESSEN,INST ANORGAN & ANALYT CHEM,HEINRICH BUFF RING 58,W-6300 GIESSEN,GERMANY

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1992年 / 616卷 / 10期

关键词：

ND4TI9O24; PREPARATION; CRYSTAL STRUCTURE;

D O I：

10.1002/zaac.19926161014

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The compound Nd4Ti9O24 was prepared by heating mixtures of Nd2O3/TiO2 (1 : 4.5) at temperatures of T = 1 330-degrees-C in air (2 x 1 d). Single crystals of Nd4Ti9O24 were obtained by chemical transport reaction (T2 --> T1; T2 = 1000-degrees-C, T1 = 900-degrees-C, 14 d) using chlorine (p(Cl2, 298 K) = 1 atm) as transport agent with Nd4Ti9O24 as starting material. Nd4Ti9O24 crystallizes in the orthorhombic space group Fddd (No. 70) with a = 13.9926(11) angstrom, b 35.2844(21) angstrom, c = 14.4676(17) angstrom (Z = 16). The structure was refined to give R = 4.0% and R(w) = 3.7%. Main building units are TiO6 octahedra, NdO6 distorted square antiprisms and NdO6 octahedra.

引用

页码：86 / 94

页数：9

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