title: Li4Cs3B7O14: synthesis, crystal structure, and optical properties.
abstract: A new noncentrosymmetric polyborate, Li(4)Cs(3)B(7)-O(14), has been synthesized using the conventional solid state reaction method. It crystallizes in the trigonal space group P3(1)21 (No. 152) with unit cell parameters of a = 6.9313(6) Å, c = 26.799(3) Å, and Z = 3. The new structure contains an infinite three-dimensional matrix that is built from B(7)O(14) building blocks rarely found in anhydrous borate compounds and LiO(n) (n = 4, 5), CsO(n) (n = 9, 10) polyhedra. The optical characterization of the compound indicates that the compound is phase matchable, and the UV cutoff edge is below 190 nm. IR spectroscopy, thermal analysis, and second-harmonic generation were also performed on the reported material.
authors.affiliation: Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences, 40-1 South Beijing Road, Urumqi 830011, China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Yang
authors.forename: Shilie
authors.initials: S
authors.lastname: Pan
authors.forename: Hongyi
authors.initials: H
authors.lastname: Li
authors.forename: Jian
authors.initials: J
authors.lastname: Han
authors.forename: Zhaohui
authors.initials: Z
authors.lastname: Chen
authors.forename: Wenwu
authors.initials: W
authors.lastname: Zhao
authors.forename: Zhongxiang
authors.initials: Z
authors.lastname: Zhou