Уточнення кристалічної структури бінарної сполуки TbSn₂ методом монокристалу

Abstract

Ця робота присвячена визначенню кристалічної структури одержаної сполуки за допомогою рентгенівського методу монокристалу.

The crystal structure of the binary phaseTbSn₂ (a = 4,4118(5), b = 16,312(2), c = 4,3138(6) Å), which belongs to the ZrSi₂ structure type (space group Cmcm, Pearson symbol oS12) was investigated and refined by single crystal method using single crystal diffractometer XCALIBUR (MoKₐ- radiation). Atomic and thermal displacement parameters are refined by SHELX-97. The coordination polyhedra terbium atoms in this structure are distorted four-capped trigonal prism. Coordination polyhedra for atoms Sn1 are double anti-trigonal prism and for atoms Sn2 are trigonal prism. The density of states in the Fermi level indicates a metallic connection type found in the ternary phase.