STUDIES ON LANTHANOIDS-ANTIMONY-CHALCOGENIDES. I. SYNTHESIS AND CRYSTAL DATA OF THREE NEW LANTHANUM ANTIMONY CHALCOGENIDES.

Article abstract of DOI:10.1246/bcsj.56.2615

Three new La-Sb chalcogenides were synthesized by hydrothermal or evacuated silica tube methods. (1) LaSbO//2S//2: a bright-red needle crystal; crystal system, hexagonal; space group, P6//3/m; lattice constants, a equals 14. 954(3), c equals 3. 898(2) A, and Z equals 6. (2) La//6Sb//8S//2//1: a blackish-red columnar crystal with metallic luster, orthorhombic, P222, a equals 14. 317(2), b equals 15. 239(4), c equals 8. 685(1) A, and Z equals 2. (3) La//3Sb//3S//1//0: a bright-red plate-like crystal, monoclinic, a equals 13. 209(6), b equals 14. 229(6), c equals 5. 583(1) A, beta equals 94. 54(3) degree , and Z equals 2.