Synthesis and structural characterization of Li3K3Y7(BO3)9

Publication date: September 2017 Source:Journal of Solid State Chemistry, Volume 253 Author(s): Sebastian Bräuchle, Hubert Huppertz Li3K3Y7(BO3)9 was prepared by high-temperature solid state synthesis at 900°C in a platinum crucible from lithium carbonate, potassium carbonate, boric acid, and yttrium(III) oxide. The compound crystallizes in the orthorhombic space group Pca21 (no. 29) (Z = 4). The structure was refined from single-crystal X-ray diffraction data: a = 20.743(8), b = 6.387(4), c = 17.474(4) Å, V = 2315.2(2) Å3, R1 = 0.0473, and wR2 = 0.0637 for all data. The crystal structure of Li3K3Y7(BO3)9 consists of isolated BO3 groups forming [Li3B4O21] units in combination with LiO6 octahedra in the ac plane, which are interconnected to each other by additional planar BO3 groups. The Y3+ and K+ cations are arranged in layers along the a-axis. Graphical abstract
Source: Journal of Solid State Chemistry - Category: Chemistry Source Type: research