论文部分内容阅读
The title compound was prepared from the corresponding elements (Sm, Nb and Se) using transport reaction with iodine at a temperature gradient of 1100/1040℃. The crystal structure was established by the single crystal X-ray diffraction technique with the following crystal data: Sm0.27Nb2.73Se4, Mr = 609. 8, hexagonal, P63/m, a = 9.997(1), c=3.470(2) A , V = 300. 4(2)A3, Z = 2, Dc= 6. 75 g/cm3, F (000) = 529. 34,μ= 292. 6cm-1, R = 0. 018, Rw = 0. 019. The ternary compound was confirmed to be isostructural with the compound Nb3Se4, and was found to be a conductor.
The title compound was prepared from the corresponding elements (Sm, Nb and Se) using transport reaction with iodine at a temperature gradient of 1100/1040 ° C. The crystal structure was established by the single crystal X-ray diffraction technique with the following crystal data : Sm0.27Nb2.73Se4, Mr = 609. 8, hexagonal, P63 / m, a = 9.997 (1), c = 3.470 (2) A, V = 300.4 A3, Z = 2, Dc = 6. 75 g / cm3, F (000) = 529. 34, μ = 292. 6cm-1, R = 0.018, Rw = 0.019. The ternary compound was confirmed to be isostructural with the compound Nb3Se4, and was found to be a conductor.