title: K3LaTe2O9: a new alkali-rare earth tellurate with face-sharing TeO6 octahedra.
abstract: A new quaternary alkali-lanthanide metal tellurate K3LaTe2O9 has been synthesized by a conventional high-temperature solid state method, and single crystals have been grown by spontaneous crystallization. K3LaTe2O9 crystallizes in the hexagonal space group P63/mmc, with a = b = 6.0589(9) Å, c = 15.024(3) Å, and Z = 2. In the structure, [Te2O9](6-) contains rare face-sharing TeO6 polyhedra, which are connected by LaO6 octahedra forming a three-dimensional framework structure. Furthermore, its properties are investigated by UV-vis-NIR diffuse reflectance spectroscopy, Raman and IR spectroscopy, thermal analysis, variable-temperature X-ray powder diffraction, and first-principles calculations.
authors.affiliation: Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China. gczhang@mail.ipc.ac.cn.
authors.forename: Xinyuan
authors.initials: X
authors.lastname: Zhang
authors.forename: Jiyong
authors.initials: J
authors.lastname: Yao
authors.forename: Xingxing
authors.initials: X
authors.lastname: Jiang
authors.forename: Ying
authors.initials: Y
authors.lastname: Fu
authors.forename: Zheshuai
authors.initials: Z
authors.lastname: Lin
authors.forename: Guochun
authors.initials: G
authors.lastname: Zhang
authors.forename: Yicheng
authors.initials: Y
authors.lastname: Wu