DETERMINATION OF CRYSTAL-STRUCTURE OF T-NA3PO4 WITH X-RAY AND NEUTRON POWER DIFFRACTION

被引：41

作者：

LISSEL, E ^{[1
]}

JANSEN, M ^{[1
]}

JANSEN, E ^{[1
]}

WILL, G ^{[1
]}

机构：

[1] UNIV BONN,INST MINERAL,W-5300 BONN,GERMANY

来源：

ZEITSCHRIFT FUR KRISTALLOGRAPHIE | 1990年 / 192卷 / 3-4期

关键词：

SODIUM ORTHOPHOSPHATE; CRYSTAL STRUCTURE; RIETVELD TECHNIQUE;

D O I：

10.1524/zkri.1990.192.3-4.233

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The crystal structure of the low temperature modification of Na3PO4 (T < 601 K) has been determined and refined by means of Rietveld's full-profile technique using X-ray and neutron powder diffraction data. T-Na3PO4 is tetragonal with space group P4BAR2(1)c. The cell dimensions are a = 1080.84(6) pm, and c = 681.78(5) pm. At the phase transition the basic arrangement of the Na- and P-sites as compared to H-Na3PO4 is not changed, and can be derived from the Li3Bi- and Na3AlF6-types of structure. In contrast to H-Na3PO4 the PO4-groups are completely ordered with respect to their orientations.

引用

页码：233 / 243

页数：11

共 16 条

[1] BOND VALENCES - SIMPLE STRUCTURAL MODEL FOR INORGANIC-CHEMISTRY [J].