Synthesis, structure, and optical properties of the new lanthanum copper oxysulfide La3CuO2S3

被引：19

作者：

Ijjaali, I ^{[1
]}

Haynes, CL ^{[1
]}

McFarland, AD ^{[1
]}

Van Duyne, RP ^{[1
]}

Ibers, JA ^{[1
]}

机构：

[1] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2003年 / 172卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0022-4596(03)00058-6

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The new quaternary lanthanum copper oxysulfide La3CuO2S3 has been synthesized by the reaction of La2S3 and CuO at 1223 K. This compound crystallizes in space group Pmna of the orthorhombic system with four formula units in a cell of dimensions at 153 K of a = 14.0318(7) Angstrom, b = 3.9342(2) Angstrom, and c = 12.5212(6) Angstrom. The structure of La3CuO2S3 consists of a three-dimensional framework of interconnected LaOnS8-n bicapped trigonal prisms and CuS4 tetrahedra. Optical absorption measurements on a La3CuO2S3 single crystal led to derived band gaps of 2.01 eV in both the [010] and [001] directions. (C) 2003 Elsevier Science (USA). All rights reserved.

引用

页码：257 / 260

页数：4

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