过氧铌钨酸钾的制备和晶体结构 |
PREPARE AND STRUCTURE DETERMINATION OF POTASSIUM PEROXYNIOBATUNGSTATE |
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摘要: 合成的标题化合物K8H4Nb4W8O36(O2)4·18H2O晶体属立方晶系,Pm3-m空间群,晶胞参数a=1.064(1) nm, Z=1,阴离子骨架呈一种高对称的全新十二聚构型。钾离子无序分布在靠近对称中心的4个相关位置。 |
关键词: 过氧铌钨酸钾 粉状白钨酸 晶体结构 |
基金项目: |
Abstract: The new potassium peroxyniobatungstate [K8H4Nb4W8O36(O2)4·18H2O] was prepared by white powdery tungstic acid, potassium niobate and hydrogen peroxide. The crystal structure was determined by X-ray single crystal diffraction techniques. The crystal belongs to cubic system with space group Pm3-m. The unit cell parameters are a=1.064(1) nm, V=1.205(5) nm3, Z=1 D=4.388 g/cm3. |
Keywords: potassium peroxyniobatungstate white powdery tungstic acid crystal structure |
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林秉发,朱思三,谢高阳,陈健,胡春华.过氧铌钨酸钾的制备和晶体结构[J].无机化学学报,1999,15(1):78-82. |
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