Wang Yongjiang, Pan Shilie, Tian Xuelin, Zhou Zhongxiang, Liu Gang, Wang Jide, Jia Dianzeng
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.
Inorg Chem. 2009 Aug 17;48(16):7800-4. doi: 10.1021/ic900700u.
Single crystal of hydrated sodium borate Na(2)B(5)O(8)(OH).2H(2)O has been grown with sizes up to 5 x 5 x 3 mm(3) under mild hydrothermal conditions at 180 degrees C. The structure is determined by single-crystal X-ray diffraction and further characterized by IR and TG analyses. It crystallizes in the orthorhombic space group Pna2(1), with a = 11.967(2) A, b = 6.5320(13) A, c = 11.126(2) A, Z = 4, R1 = 0.0183, and wR2 = 0.0483. The crystal structure of Na(2)B(5)O(8)(OH).2H(2)O is made up of Na-O polyhedra, and B(5)O(8)(OH) polyborate anions. Transmittance spectrum is performed on the Na(2)B(5)O(8)(OH).2H(2)O crystal, which shows an absorption edge less than 190 nm in the UV region. The powder second-harmonic generation intensity measured by the Kurtz-Perry method indicates that Na(2)B(5)O(8)(OH).2H(2)O is about half that of KH(2)PO(4) (KDP).
水合硼酸钠Na₂B₅O₈(OH)·2H₂O的单晶已在180℃的温和水热条件下生长，尺寸达5×5×3 mm³。其结构通过单晶X射线衍射确定，并通过红外和热重分析进一步表征。它结晶于正交空间群Pna2₁，a = 11.967(2) Å，b = 6.5320(13) Å，c = 11.126(2) Å，Z = 4，R1 = 0.0183，wR2 = 0.0483。Na₂B₅O₈(OH)·2H₂O的晶体结构由Na - O多面体和[B₅O₈(OH)]²⁻多硼酸根阴离子组成。对Na₂B₅O₈(OH)·2H₂O晶体进行了透过率光谱测试，结果表明其在紫外区域的吸收边小于190 nm。用库尔茨 - 佩里方法测量的粉末二次谐波产生强度表明，Na₂B₅O₈(OH)·2H₂O约为磷酸二氢钾（KDP）的一半。
