A novel lead borate of NaPb4(H2O)(B5O9)2·BO3 with nonlinear optical property

作者：Huang G; Pan R; He H; Yang B F; Yang G Y

来源：Inorganic Chemistry Communications, 2015, 59: 17-20.

DOI：10.1016/j.inoche.2015.04.021

• Borate
• Cluster
• Crystal structure
• Hydrothermal syntheses
• Nonlinear optical

A new mixed metal borate, NaPb4(H2O)(B5O9)2·BO3, with an acentric structure has been successfully made under hydrothermal conditions and structurally characterized by IR spectroscopy, powder X-ray diffraction (PXRD), thermogravimetric analysis (TGA) and single-crystal X-ray diffraction, respectively. The structural analysis shows that 1 crystallizes in the orthorhombic space group Pnn2 (No. 34) with a = 11.3724(5) Å, b = 11.4455(4) Å, c = 6.5578(2) Å and Z = 2. In the structure 1, the structural building unit, B5O12 cluster, connects adjacent six same ones to form a 3-D oxoboron framework with 8-membered ring (MR) and 10-MR channels along the c-axis. The Pb atoms and coordinated water molecules are located in the 8-MR channels, while the 10-MR channels were occupied by the chains built by Na atoms and the BO3 groups. Second-harmonic generation (SHG) measurements on the powder samples reveal that 1 exhibits SHG efficiency approximately 2 times that of KH2PO4 (KDP). Also it has a UV cutoff edge below 220 nm.

• 出版日期2015
• 单位北京理工大学