BaZnBe(BO)F：一种具有SBBO型结构的新型锌铍硼酸盐，克服了多晶型问题。
BaZnBe(BO)F: a novel zinc-beryllium borate with SBBO-type structure overcoming the polymorphism problem.
作者信息
Guo Ruixin, Liu Xiaomeng, Tao Ce, Tang Changcheng, Xia Mingjun, Liu Lijuan, Lin Zheshuai, Wang Xiaoyang
机构信息
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
出版信息
Dalton Trans. 2021 Feb 16;50(6):2138-2142. doi: 10.1039/d0dt04153j.
A novel zinc-beryllium borate BaZnBe2(BO3)2F2 was grown by a high-temperature flux method for the first time. It crystallizes in P3[combining macron] with the cell parameters of a = b = 4.5998, c = 7.7037 and Z = 1, which is different from BaMBe2(BO3)2F2 (M = Mg, Ca). Interestingly, when Zn replaces Mg and Ca in BaMgBe2(BO3)2F2 and BaCaBe2(BO3)2F2, the structure retains the same anionic group but the symmetry is lowered. The title compound contains a flexible net structure [Be3B3O6F3]∞ in the a-b plane with Ba and Zn atoms located in the interlayers accordingly, which overcomes the structural instability problems of SrBe2B2O7 (SBBO). The structure evolution from SBBO to BaZnBe2(BO3)2F2 was discussed. This work is of great significance to the discovery of new materials and the modification of existing materials.
首次采用高温熔盐法生长出一种新型硼酸锌铍BaZnBe2(BO3)2F2。它属于P3[上标横线]空间群，晶胞参数为a = b = 4.5998，c = 7.7037，Z = 1，这与BaMBe2(BO3)2F2（M = Mg，Ca）不同。有趣的是，当Zn取代BaMgBe2(BO3)2F2和BaCaBe2(BO3)2F2中的Mg和Ca时，结构保留相同的阴离子基团，但对称性降低。标题化合物在a - b平面包含一个柔性网络结构[Be3B3O6F3]∞，Ba和Zn原子相应地位于层间，这克服了SrBe2B2O7（SBBO）的结构不稳定性问题。讨论了从SBBO到BaZnBe2(BO3)2F2的结构演变。这项工作对新材料的发现和现有材料的改性具有重要意义。
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