Bismuth borates: One-dimensional borate chains and nonlinear optical properties
Bismuth borates: One-dimensional borate chains and nonlinear optical properties
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DOI：
10.1021/cm050215d
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发表时间：
2005-08-09
影响因子：
8.6
通讯作者：
Lin, JH
中科院分区：
文献类型：
--
作者：
Li, LY;Li, GB;Lin, JH
在低温硼酸熔剂中合成了Bi[B4 O 6（OH）（2）]OH（I）、BiB 2 O 4F（II）和Bi-3[B6 O 13（OH）]（III）三种硼酸铋化合物，用单晶和粉末X射线衍射技术测定了它们的结构。这三种硼酸铋晶体均含有一维硼酸链，且属于非中心对称空间群。I是水合硼酸盐，结晶，空间群为PI，晶格常数a = 4.300（1）埃，B = 8.587（2）埃，c = 10.518（2）埃，α = 113.11（3）埃，100.50（3）度，和β = 90.36（3）度，硼酸酯链由3-环（2BO（3）+BO 4）和BO 3基团组成。II是氟硼酸根，晶体属三角空间群P3（2），a = 6.7147（1）埃，c = 6.4688（1）埃，硼酸根阴离子是由三元硼酸根环（3BO（4））广泛连接形成的三重螺旋链。III也是一种水合硼酸盐，其结构与11密切相关，其中六分之一的硼酸盐基团呈三角形几何构型（BOA将对称性降低到P1，a = 6.6257（1）埃，B =6.6238（1）埃，c = 6.6541（1）埃，α = 89.998（3）度，β = 89.982（2）度，γ = 119.992（2）度。这三种硼酸铋化合物都具有非线性光学性质。
Three bismuth borates, Bi[B4O6(OH)(2)]OH (I), BiB2O4F (II), and Bi-3[B6O13(OH)] (III), were obtained in boric acid flux at low temperatures and their structures were determined by using single-crystal and powder X-ray diffraction techniques. All these three bismuth borates contain one-dimensional borate chains and crystallize in noncentrosymmetric space groups. I is a hydrated borate, crystallizing, in the space group PI with lattice constants a = 4.300(1) angstrom, b = 8.587(2) angstrom, c = 10.518(2) angstrom, alpha = 113.11(3)', 100.50(3)degrees, and beta = 90.36(3)degrees, and the borate chain consists of a 3-ring (2BO(3) + BO4) and a BO3 group. II is a fluoroborate, which crystallizes in the trigonal space group P3(2) with a = 6.7147(1) angstrom and c = 6.4688(1) angstrom, and the borate anion is a 3-fold helix chain formed by extensive linkage of three-membered borate rings (3BO(4)). III is also a hydrated borate with a structure that is closely related to 11, in which one-sixth of the borate groups are in triangular geometry (BOA which reduces the symmetry to P1, a = 6.6257(1) angstrom, b =6.6238(1) angstrom, c = 6.6541(1) angstrom, and alpha = 89.998(3)degrees, beta = 89.982(2)degrees, and gamma = 119.992(2)degrees. All these three bismuth borates exhibit nonlinear optical (NLO) properties.