Materials Data on K2Yb2O3 by Materials Project
K2Yb2O3 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. K1+ is bonded in a 3-coordinate geometry to four O2- atoms. There are a spread of K–O bond distances ranging from 2.76–3.10 Å. Yb2+ is bonded to four O2- atoms to form a mixture of edge and corner-sharing YbO4 tetrahedra. There are a spread of Yb–O bond distances ranging from 2.20–2.26 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent K1+ and two equivalent Yb2+ atoms to form corner-sharing OK4Yb2 octahedra. The corner-sharing octahedral tilt angles are 61°. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent K1+ and three equivalent Yb2+ atoms.
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