【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=7.1
【机 构】
：
稀土材料化学与应用国家重点实验室北京大学化学与分子工程学院,稀土材料化学与应用国家重点实验室北京大学化学与分子工程学院,稀土材料化学与应用国家重点实验室北京大学化学与分子工程学院 北京100871,北
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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犤BeB4O11犦构成,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。
A new beryllium polyborate boric acid, H2BeB4O8, has been synthesized in boric acid medium. The crystal structure has been determined by polycrystalline X-ray diffraction. The space group of H2BeB4O8 is P21 / n. The unit cell parameters a = 17.7564 (2) ?, b = 4.2948 (1) ?, c = 7.1532 (1) ?,? = 96.8797 (9) °. The layered structure of H2BeB4O8 consists of a double ternary ring BeB4O11 犦. The layers are connected into three-dimensional structure by the hydrogen bonds formed by the hydroxyl groups perpendicular to the plane of the layer.
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