Materials Data on Lu2SeO2 by Materials Project
Lu2SeO2 crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. Lu3+ is bonded in a 4-coordinate geometry to three equivalent Se2- and four equivalent O2- atoms. All Lu–Se bond lengths are 2.92 Å. There are one shorter (2.23 Å) and three longer (2.24 Å) Lu–O bond lengths. Se2- is bonded to six equivalent Lu3+ atoms to form distorted SeLu6 octahedra that share corners with twelve equivalent OLu4 tetrahedra, edges with six equivalent SeLu6 octahedra, and edges with six equivalent OLu4 tetrahedra. O2- is bonded to four equivalent Lu3+ atoms to form OLu4 tetrahedra that share corners with six equivalent SeLu6 octahedra, corners with six equivalent OLu4 tetrahedra, edges with three equivalent SeLu6 octahedra, and edges with three equivalent OLu4 tetrahedra. The corner-sharing octahedra tilt angles range from 28–48°.