Structure of LaTi2Al9O19 and reanalysis of the crystal structure of La3Ti5Al15O37.

IF 1.9 3区化学 Acta Crystallographica Section B-structural Science Pub Date : 2011-12-01 Epub Date: 2011-10-13 DOI:10.1107/S0108768111039759

Marta Kasunič, Anton Meden, Srečo D Škapin, Danilo Suvorov, Amalija Golobič

引用次数: 8

Abstract

The non-perovskite compound LaTi(2)Al(9)O(19) was synthesized and structurally characterized by conventional X-ray powder diffraction and shown to be isostructural with SrTi(3)Al(8)O(19), as confirmed by bond-valence sum calculations. The dielectric properties of LaTi(2)Al(9)O(19) at 1 MHz were measured. The crystal structure of La(3)Ti(5)Al(15)O(37), which is referred to as the most complex structure solved ab initio from X-ray powder diffraction (XRPD) to date, is shown to be incorrect.

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La3Ti5Al15O37晶体结构的再分析。

合成了非钙钛矿化合物LaTi(2)Al(9)O(19)，并用常规x射线粉末衍射对其进行了结构表征，并通过键价和计算证实了其与SrTi(3)Al(8)O(19)的同构性。测量了LaTi(2)Al(9)O(19)在1 MHz下的介电性能。La(3)Ti(5)Al(15)O(37)的晶体结构被认为是迄今为止从x射线粉末衍射(XRPD)从头开始求解的最复杂的结构，但结果表明它是不正确的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Crystallographica Section B-structural Science 化学-晶体学

自引率

5.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials publishes scientific articles related to the structural science of compounds and materials in the widest sense. Knowledge of the arrangements of atoms, including their temporal variations and dependencies on temperature and pressure, is often the key to understanding physical and chemical phenomena and is crucial for the design of new materials and supramolecular devices. Acta Crystallographica B is the forum for the publication of such contributions. Scientific developments based on experimental studies as well as those based on theoretical approaches, including crystal-structure prediction, structure-property relations and the use of databases of crystal structures, are published.