β-SrNH and β-SrND -: Synthesis and crystal structure determination by X-ray and neutron powder diffraction

被引：0

作者：

Schultz-Coulon, V ^{[1
]}

Irran, E ^{[1
]}

Putz, B ^{[1
]}

Schnick, W ^{[1
]}

机构：

[1] Univ Munich, Inst Anorgan Chem, D-81377 Munich, Germany

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1999年 / 625卷 / 07期

关键词：

strontium imide; neutron powder diffraction; crystal structure;

D O I：

10.1002/(SICI)1521-3749(199907)625:7<1086::AID-ZAAC1086>3.0.CO;2-B

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

By reaction of strontium with NH3 in a flow tube at 750 degrees C a novel modification of strontium imide, beta-SrNH, was obtained as a dark yellow powder. According to X-ray powder diffractometry und crystal structure determination by direct methods beta-SrNH and beta-SrND adopt a highly distorted variant of the NaCl type of structure (Pnma, a = 757.70(1), b = 392.260(4), c = 569.652(9) pm, Z = 4, wR(p) = 0.098, R-p = 0.075, R-F = 0.044). Temperature dependent neutron powder diffraction of beta-SrND revealed the position of the D atoms which in contrast to alpha-SrND are crystallographically ordered. At higher temperatures beta-SrNH transforms to alpha-SrNH.

引用

页码：1086 / 1092

页数：7

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