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

共 18 条

[1] CRYSTAL-STRUCTURE OF AUCD3 [J].

ALASAFI, KM ;

SCHUBERT, K .

JOURNAL OF THE LESS-COMMON METALS, 1977, 51 (02) :225-233

[2]

Brauer G, 1937, Z PHYS CHEM B-CHEM E, V37, P323

[3] NA3HG - THE MOST SODIUM RICH AMALGAM IN THE SYSTEM SODIUM-MERCURY [J].

DEISEROTH, HJ ;

TOELSTEDE, D .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1992, 615 (09) :43-48

[4] CRYSTAL STRUCTURE OF IRAL3 [J].

EDSHAMMAR, LE .

ACTA CHEMICA SCANDINAVICA, 1967, 21 (04) :1104-+

[5] ZRALPT2 AND HFALPT2 PHASES [J].

FERRO, R ;

MARAZZA, R ;

RAMBALDI, G ;

SACCONE, A .

JOURNAL OF THE LESS-COMMON METALS, 1975, 40 (02) :251-252

[6]

HAFNER P, 1994, TEHSIS U REGENSBURG

[7] Contributions to systematic relations science - Copper phosphite [J].

Haraldsen, H .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1939, 240 (04) :337-354

[8]

HARALDSEN H, 1932, SKRIFTER NORSKE VIDE, V9, P1

[9] DIE KRISTALLSTRUKTUR VON LANTHANTRIFLUORID [J].

MANSMANN, M .

ZEITSCHRIFT FUR KRISTALLOGRAPHIE KRISTALLGEOMETRIE KRISTALLPHYSIK KRISTALLCHEMIE, 1965, 122 (5-6) :375-&

[10] UBER VERBINDUNGEN VOM ANTI-LAF3-STRUKTURTYP [J].

MANSMANN, M .

ZEITSCHRIFT FUR KRISTALLOGRAPHIE KRISTALLGEOMETRIE KRISTALLPHYSIK KRISTALLCHEMIE, 1965, 122 (5-6) :399-&

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