Sr(Mg3Ge)N4 and Sr(Mg2Ga2)N4: New isostructural Mg-containing quaternary nitrides with nitridometallate anions of 3∞[Mg3Ge)N4]2- and 3∞[Mg2Ga2)N4]2- in a 3D-network structure

被引：38

作者：

Park, Dong Gon ^{[2
]}

Dong, Yongkwan ^{[1
]}

DiSalvo, Francis J. ^{[1
]}

机构：

[1] Cornell Univ, Baker Lab, Dept Chem, Ithaca, NY 14853 USA

[2] Sookmyung Womens Univ, Dept Chem, Seoul 140742, South Korea

来源：

SOLID STATE SCIENCES | 2008年 / 10卷 / 12期

基金：

美国国家科学基金会;

关键词：

Quaternary metal nitrides; Single crystals; X-ray diffraction;

D O I：

10.1016/j.solidstatesciences.2008.04.001

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two new isostructural Mg-containing quaternary nitrides, Sr(Mg3Ge)N-4 and Sr(Mg2Ga2)N-4, were obtained as single crystals from their constituent elements in molten Na. Sr(Mg3Ga2)N-4 and Sr(Mg2Ga2)N-4 both crystallize in space group I4/m (No. 87) with a = 8.316(1), c = 3.398(1) angstrom, Z = 2, and a = 8.2925(7), c = 3.3585(5) angstrom, Z = 2, respectively. The two compounds are isoelectronic, with two Ga3+ in Sr(Mg2Ga2)N-4 replaced by one Mg2+ and one Ge4+ in Sr(Mg3Ge)N-4. Condensed nitridometallate anions, (3)(infinity)[Mg3Ge)N-4](2-) and (3)(infinity)[Mg2Ga2)N-4](2-), form a 3D-network structure with basket-shaped cavities, which are occupied by the Sr2+ counter-catuions. Each Sr2+ coordinates to eight N in a symmetric, near cubic conformation, with all Sr-N bond lengths of 2.86 angstrom. (C) 2008 Elsevier Masson SAS. All rights reserved.

引用

页码：1846 / 1852

页数：7

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