Li5Rb2B7O14: a new congruently melting compound with two kinds of B-O one-dimensional chains and short UV absorption edge

被引：25

作者：

Yang, Yun ^{[1
]}

Pan, Shilie ^{[1
]}

Hou, Xueling ^{[1
]}

Dong, Xiaoyu ^{[1
,2
]}

Su, Xin ^{[1
]}

Yang, Zhihua ^{[1
]}

Zhang, Min ^{[1
,2
]}

Zhao, Wenwu ^{[1
,2
]}

Chen, Zhaohui ^{[1
]}

机构：

[1] Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Xinjiang Key Lab Elect Informat Mat & Devices, Urumqi 830011, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

CRYSTENGCOMM | 2012年 / 14卷 / 20期

基金：

中国国家自然科学基金;

关键词：

NONLINEAR-OPTICAL CRYSTAL; ALKALINE BERYLLIUM BORATE; BOND-VALENCE PARAMETERS; SINGLE-CRYSTALS; GROWTH; POLYMORPHISM; TELLURITES; BI2ZNOB2O6; CHEMISTRY; OXYBORATE;

D O I：

10.1039/c2ce06742k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new non-centrosymmetric polyborate, Li5Rb2B7O14, has been synthesized. The structure of the title compound was solved by single-crystal X-ray diffraction analysis. The infinite three-dimensional structure of Li5Rb2B7O14 is constructed from bridged LiOn (n = 4, 5, 6) and RbO10 polyhedra with two kinds of one-dimensional B-O chain fundamental building blocks through their vertex oxygen atoms. It melts congruently and exhibits a short-wavelength absorption onset at 190 nm. The feature of a short UV cut off edge is favourable in practical applications. The calculated band structure and the density of states of Li5Rb2B7O14 suggest that its indirect energy gap is 4.247 eV. The materials have also been characterized by infrared spectroscopy and thermal analysis.

引用

页码：6720 / 6725

页数：6

共 18 条

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