| 层状硼酸铍H2BeB4O8的合成与结构 |
| Synthesis and Crystal Structure of Layered Beryllium Polyborate H2BeB4O8 |
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| 摘要: 在硼酸介质中合成了一种新的具有层状结构的多硼酸铍H2BeB4O8,并利用多晶X射线衍射方法确定了晶体结构。H2BeB4O8的空间群为P21/n,晶胞参数a=17.7564(2)?,b=4.2948(1)?,c=7.1532(1)?,β=96.8797(9)°。H2BeB4O8的层状结构由双三元环[BeB4O11]构成,层之间通过垂直于层平面的羟基所形成的氢键连接成三维结构。 |
| 关键词: 多硼酸铍 硼酸介质 层状结构 |
| 基金项目: |
| Abstract: A new layered beryllium polyborate H2BeB4O8 was synthesized in molten boric acid flux. It crystallizes in the monoclinic space group P21/n with lattice constants a=17.75640(15)?, b=4.2948(1)?, c=7.1532(1)?, β=96.8797(9)° and V=541.574(9)?3. The crystal structure, determined by powder X-ray diffraction tech-niques, is composed of double three-membered ring unit [BeB4O11], which is further connected by corner-sharing to form two-dimensional layers. The two-dimensional layers are stacked along [100] direction and form three-dimensional structure via hydrogen bonding. CCDC: 181925. |
| Keywords: beryllium polyborate boric acid flux layered structure |
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| 李红梅,鞠晶,林建华.层状硼酸铍H2BeB4O8的合成与结构[J].无机化学学报,2002,18(8):764-768. |
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