Syntheses, crystal structures, and optical properties of Pb₆B₃O₁₀X (X=F, Cl, Br)

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• 作者：Lingyun Dong ; Shilie Pan ; Hongping Wu ; Xin Su ; Hongwei Yu ; Ying Wang ; Zhaohui Chen ; Zhenjun Huang ; Zhihua Yang
• 关键词：Pb6B3O10X (X=F ; Cl ; Br) ; Oxyborates ; Crystal structures ; Syntheses ; Optical properties
• 刊名：Journal of Solid State Chemistry
• 出版年：2013
• 出版时间：August, 2013
• 年：2013
• 卷：204
• 期：Complete
• 页码：64-69
• 全文大小：1767 K

文摘

A series of lead-containing halogen oxyborates, Pb₆B₃O₁₀X (X=F, Cl, Br), have been grown by high-temperature solution method and their crystal structures were determined by single-crystal X-ray diffraction. They are isostructural and crystallize in the space group Pbcm of the orthorhombic crystal system. The crystal structures are dominated by one-dimensional _¡Þ[(Pb₄O)(BO₃)₃] ¡°Zig-Zag¡±-chains, while the remaining Pb atoms and X (X=F, Cl, Br) atoms are filled to balance the charge. Compared with the previously reported compound Pb₄O(BO₃)₂ (the molecular formula Pb₄O(BO₃)₂ can be regarded as Pb₆B₃O_10.5) with the space group Aba2, the structures of Pb₆B₃O₁₀X (X=F, Cl, Br) are completely different from that of Pb₄O(BO₃)₂. IR spectroscopy, UV-vis-NIR diffuse reflectance spectroscopy, thermal analysis, and theoretical calculations were also performed on the reported materials.