NITRIDO-SILICATES .3. HIGH-TEMPERATURE SYNTHESIS, CRYSTAL-STRUCTURE, AND MAGNETIC-PROPERTIES OF CE-3[SI6N11]

被引：55

作者：

SCHLIEPER, T

SCHNICK, W

机构：

[1] Laboratorium Für Anorganische Chemie, Universität Bayreuth

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1995年 / 621卷 / 09期

关键词：

SILICON NITRIDES; NITRIDO-SILICATES; CERIUM; CRYSTAL STRUCTURE; MAGNETIC SUSCEPTIBILITY;

D O I：

10.1002/zaac.19956210917

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Pure Ce-3[Si6N11] was obtained as transparent yellow crystals by reaction of metallic cerium with silicon diimide (Ce:Si = 1 : 2)under nitrogen atmosphere in a specially developed high-frequency furnace at 1660 degrees C. Ce-3[Si6N11] (P4bm, a = 1013.7(3), c = 483.9(5) pm, Z = 2, R = 0.034, wR = 0.024) contains Ce3+ ions as well as a three-dimensional covalent anionic network structure of corner-sharing SiN4 tetrahedra. Measurements of the magnetic susceptibility gave no indications for magnetic ordering phenomena in the temperature range between 2 and 300 K. Above 100 K pure Curie-Weiss behaviour (u(eff) = 2,10 mu(B), determined at room temperature) was observed.

引用

页码：1535 / 1538

页数：4