ChemInform Abstract: High‐Pressure Synthesis and Structures of New Barium Chromium Sulfides, BaCr₄S₇ and Ba₂Cr₅S₁₀, with New Type Face‐Sharing CrS₆ Structure Units.

Abstract

Structure Units. -The structures of the new compounds (IV) and (V) are determined by single crystal XRD. (IV) crystallizes in the monoclinic space group P21/c with Z = 4. The structure contains CrS2 sheets composed of edge-sharing CrS6 octahedra. The sheets are connected by wall-shaped subunits composed of face-sharing CrS6 octahedra to form a tunnel structure in which the Ba atoms are situated. Compound (V) crystallizes in the triclinic space group P1 with Z = 2. The structure is composed of CrS2 sheets and the wall--shaped subunits, as in (IV), but the subunits do not connect the adjacent sheets. The compound exhibits a two-dimensional structure, and Ba atoms occupy interlayer regions. -(FUKUOKA*, H.; MIYAKI, Y.; YAMANAKA, S.; Bull. Chem.