Synthesis and structural characterization of Li3Y(BO3)2

Li Y-3(BO3)(2) was prepared by high-temperature solid state synthesis at 900 degrees C in a platinum crucible from lithium carbonate, boric acid, and yttrium(III) oxide. The compound crystallizes monoclinically in the space group P2(1)/c (no. 14) (Z=4) isotypically to Li3Gd( BO3)(2). The structure was refined from single-crystal X-ray diffraction data: a = 8.616(3), b = 6.416(3), c = 10.014(2) angstrom, beta= 116.6( 2)degrees, V=494.9(3) angstrom(3), R1 = 0.0211, and wR2 = 0.0378 for all data. The crystal structure of Li3Y(BO3)(2) consists of [Y-2 O-14] dinuclear units, which are interconnected to each other by planar B(1) O-3 groups and LiO4 tetrahedra via common edges and corners along the a axis.