STRUCTURES AND SOME PHYSICAL-PROPERTIES OF PHASES IN THE SYSTEM K-V-S - K0.2V6S8 AND K0.6VS2

New phases in the system K-V-S are described. The structure of K//0//. //2V//6S//8, isostructural with Tl//xV//6S//8 (0. 5 less than x less than 0. 85) was determined by single crystal X-ray diffraction. The magnetic properties are those of a metal. K//0//. //6VS//2 is isostructural with K//xTiS//2 with vanadium atoms in a trigonally distorted octahedron of sulfur; the potassium atoms occupy the trigonal prismatic sites in the van der Waals gap. The structure was determined by X-ray powder diffraction.