NA3AS REVISITED - HIGH-PRESSURE SYNTHESIS OF SINGLE-CRYSTALS AND STRUCTURE REFINEMENT

被引：29

作者：

HAFNER, P ^{[1
]}

RANGE, KJ ^{[1
]}

机构：

[1] UNIV REGENSBURG,INST ANORGAN CHEM,D-93053 REGENSBURG,GERMANY

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1994年 / 216卷 / 01期

关键词：

HIGH PRESSURE SYNTHESIS; STRUCTURE REFINEMENT; SINGLE CRYSTALS;

D O I：

10.1016/0925-8388(94)91033-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Single crystals of Na3As have been obtained from the elements by high-pressure-high-temperature reaction in a modified Belt-type apparatus. The compound crystallizes hexagonally, space group P6(3)cm, with a=8.7838(8) Angstrom, c=8.9990(12) Angstrom, c/a=1.0245 and Z=6. The structure refinement (R=0.027, R(w)=0.017 for 303 absorption-corrected unique reflections) shows unequivocally that Na3As is isostructural with Cu3P and that the structure models proposed by Brauer and Zintl (referred to as ''Na3As type'' in the literature, space group P6(3)/mmc) and Mansmann (anti-LaF3, type, space group P (3) over bar cl) are wrong.

引用

页码：7 / 10

页数：4

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