摘要
Crystals of the low temperature phase b-Ba3Y(BO3)3 have been synthesized by the flux method. The structure of the title compound crystallizes in the hexagonal system, space group P63cm with the following parameters: a = 9.416(3), c = 17.536(8) ? V = 1346.6(8) ?, Ba3YB3O9, Mr = 677.36, Z = 6, Dc = 5.012 g/cm3, l(MoKa) = 0.71073 ? m = 19.409 mm-1, Flack parameter = 0.02(3), F(000) = 1764, R = 0.0714 and wR = 0.1696 for 1076 observed reflections with I > 2s(I). The compound contains two sets of YO6 octahedra, four sets of BaO9 polyhedra and three sets of BO3 planar triangles.
基金
The project was supported by the Key Project of Science and Technology of Fujian province (2001H107)
and the National Natural Science Foundation of China (N0. 50272066)
