当前位置: X-MOL 学术J. Chem. Crystallogr. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Synthesis and Crystal Structure of a 6H Hexagonal Fluoro-Perovskite: RbMgF3
Journal of Chemical Crystallography ( IF 0.4 ) Pub Date : 2020-05-12 , DOI: 10.1007/s10870-020-00834-5
Mohammad Usman , Gyanendra B. Ayer , Mark D. Smith , Hans-Conrad zur Loye

RbMgF3, a perovskite halide, serendipitously crystallized from a reaction between MgCl2 and TiO2 in molten RbCl/RbF eutectic flux (melting point = 546 °C) and was characterized by single crystal X-ray diffraction. RbMgF3 crystals can also be grown directly in higher yield using a molten RbCl–RbF flux layered over MgCl2 or MgF2 contained in a silver tube at 575 °C. RbMgF3 crystallizes in the hexagonal space group P63/mmc in the 6H hexagonal perovskite structure type with lattice parameters a = 5.8368(2) Å and c = 14.2087(5) Å. The crystal structure exhibits face-sharing Mg2F9 octahedra connected via corner-sharing MgF6 octahedra. Elemental composition for RbMgF3 was semi-quantitatively confirmed by energy dispersive spectroscopy (EDS). X-ray diffraction quality single crystals of RbMgF3 were grown from a molten RbCl/RbF eutectic flux at 850 °C and used for structure determination using single crystal X-ray diffraction. The compound crystallizes in the hexagonal space group P63/mmc in the 6H hexagonal structure type.

中文翻译:

6H 六方氟钙钛矿的合成和晶体结构:RbMgF3

RbMgF3 是一种钙钛矿卤化物,在熔融的 RbCl/RbF 共晶熔剂(熔点 = 546 °C)中通过 MgCl2 和 TiO2 之间的反应偶然结晶,并通过单晶 X 射线衍射进行表征。RbMgF3 晶体也可以在 575°C 下使用分层在 MgCl2 或银管中的 MgF2 上的熔融 RbCl-RbF 助熔剂以更高的产量直接生长。RbMgF3 在 6H 六方钙钛矿结构类型的六方空间群 P63/mmc 中结晶,晶格参数 a = 5.8368(2) Å 和 c = 14.2087(5) Å。晶体结构表现出通过共享角的 MgF6 八面体连接的共享面 Mg2F9 八面体。RbMgF3 的元素组成通过能量色散光谱 (EDS) 半定量确认。RbMgF3 的 X 射线衍射质量单晶在 850 °C 下从熔融的 RbCl/RbF 共晶熔剂中生长出来,并用于使用单晶 X 射线衍射进行结构测定。该化合物在 6H 六方结构类型的六方空间群 P63/mmc 中结晶。
更新日期:2020-05-12
down
wechat
bug