SYNTHESIS AND CRYSTAL-STRUCTURE OF SRD2 AND SRND AND BOND VALENCE PARAMETERS FOR HYDRIDES

被引:45
作者
BRESE, NE
OKEEFFE, M
VONDREELE, RB
机构
[1] ARIZONA STATE UNIV,DEPT CHEM,TEMPE,AZ 85287
[2] UNIV CALIF LOS ALAMOS SCI LAB,MANUEL LUJAN JR NEUTRON SCATTERING CTR,LOS ALAMOS,NM 87545
基金
美国国家科学基金会;
关键词
D O I
10.1016/0022-4596(90)90255-V
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A mixture of SrD2 and SrND was obtained from a reaction of Sr2N and D2. Their structures were refined using time-of-flight neutron diffraction data. SrD2 and SrND crystallize with the PbCl2 and rock salt structures, respectively. For SrND the space group is Fm3m, a = 5.4474(1) Å. The diffraction data confirm the composition SrND and indicate a rotationally disordered ND group. For SrD2, the prototype of the C29 structure type, the space group is Pnma, a = 6.3706(4) Å, b = 3.8717(2) Å, c = 7.3021(4) Å. The structure differs only in minor details from the C23 (PbCl2) type. © 1990.
引用
收藏
页码:571 / 576
页数:6
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