Synthesis and Crystal Structure of the Fluorite-Related Ruthenate, Trilanthanum Ruthenium Septaoxide La3RuO7

Abstract Single crystals of the lanthanum-containing ruthenate, trilanthanum ruthenium septaoxide, La₃RuO₇, were prepared via high-temperature flux growth and structurally characterized by single-crystal X-ray diffraction. The compound crystallizes in the orthorhombic space group Cmcm with a = 11.2077(6) ?, b = 7.4531(4) ?, and c = 7.6042(4) ? and is a member of a well-known family of compounds with the general formula Ln₃MO₇. Graphical abstract Synthesis and crystal structure of the fluorite-related ruthenate, trilanthanum ruthenium septaoxide La ₃ RuO ₇ William R. Gemmill, Mark D. Smith and Hans-Conrad zur Loye* Single crystals of La₃RuO₇ were isolated from a high-temperature KCl flux and characterized by single crystal X-ray diffraction. A view of the crystal structure approximately along [001] of La₃RuO₇ and displacement ellipsoids drawn at 50% probability level. The vertex-sharing RuO₆ octahedra are shown in blue, La³⁺ are shown in yellow, and O²⁻ are shown in red.