High-pressure synthesis and crystal structures of two new polyphosphides, NaP5 and CeP5

被引：8

作者：

Chen, X

Yamanaka, S ^{[1
]}

机构：

[1] Hiroshima Univ, Grad Sch Engn, Dept Appl Chem, Higashihiroshima 7398527, Japan

[2] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100022, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2004年 / 370卷 / 1-2期

关键词：

zintl phases; crystal growth; crystal structure and symmetry; strain; high pressure;

D O I：

10.1016/j.jallcom.2003.09.107

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：

Two novel polyphosphides, NaP5 and CeP5, were prepared in a BN crucible by the reaction of elemental components under a high pressure of 3 GPa at 800-950 degreesC. The X-ray structural analysis showed that NaP5 crystallizes in an orthorhombic space group Pnma with a = 10.993(2) (A) over circle, b = 6.524(1) (A) over circle, c = 6.903(1) (A) over circle, Z = 4 and CeP5 in the monoclinic group P2(1)/m with a = 4.9143(5) (A) over circle, b = 9.6226(8) (A) over circle, c = 5.5152(4) (A) over circle, beta = 104.303(6)degrees, Z = 2. The crystal structure of NaP5 consists of a three-dimensional framework (3)(infinity)[P-5](1-) bonds among four crystallographically inequivalent phosphorus sites, with large channels hosting the sodium cations, while CeP5 is a layered compound containing (2)(infinity)[P-5](3-) polyanionic layers that are separated by Ce3+ ions. NaP5 exhibits the diamagnetic behavior, while the temperature-dependent magnetic susceptibility of CeP5 essentially follows the Curie-Weiss law. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：110 / 113

页数：4

共 12 条

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