hide
Free keywords:
2H perovskite, antiferromagnetism, reactive flux, ruthenate, superexchange, Antiferromagnetism, Crystal structure, Inorganic compounds, Magnetic susceptibility, Platinum compounds, Positive ions, Potassium compounds, Ruthenium compounds, Silver compounds, Single crystals, Specific heat, Strontium compounds, 2h perovskite, Air stable, Antiferromagnetics, Isostructural, Reactive flux, Rhombohedral structures, Ruthenates, Space Groups, Superexchanges, X- ray diffractions, Perovskite
Abstract:
Black, air-stable crystals of the new ruthenate(V) Sr3(Ag2/3Sr1/6)RuO6 were grown in a silver ampoule using KO2 as oxidative flux. X-ray diffraction on single-crystals revealed a rhombohedral structure with the space group R (Formula presented.) c. Sr3(Ag2/3Sr1/6)RuO6 crystallizes isostructural to Sr4PtO6 in the K4CdCl6 structure type. By sharing trigonal faces, alternating [RuO6] octahedra and [(Ag2/3Sr1/6□1/6)O6 trigonal prisms form segmented chains running parallel to the crystallographic c-axis. Eightfold coordinated strontium cations are located between the rods. Regardless of the wide spatial separation of the magnetic cations (588 and 594 pm), Sr3(Ag2/3Sr1/6)RuO6 shows long-range antiferromagnetic order below the relatively high Néel temperature of 79 K in magnetic fields up to at least 9 T, as measurements of the magnetic susceptibility and heat capacity show. Despite the pseudo one-dimensional character of the structure, the characteristic of the susceptibility indicates a three-dimensional coupling of magnetic ions. © 2024 The Authors. European Journal of Inorganic Chemistry published by Wiley-VCH GmbH.
