STRUCTURE AND BONDING OF Sm_(0.27)Nb_(2.73)Se_4 BY SOLID STATE REACTION

<正> 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.

STRUCTURE AND BONDING OF Sm_(0.27)Nb_(2.73)Se_4 BY SOLID STATE REACTION

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.