Materials Data on LaO2 by Materials Project
LaO2 is Baddeleyite-like structured and crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. La is bonded to seven O atoms to form a mixture of distorted edge and corner-sharing LaO7 hexagonal pyramids. There are a spread of La–O bond distances ranging from 2.37–2.54 Å. There are two inequivalent O sites. In the first O site, O is bonded in a trigonal planar geometry to three equivalent La atoms. In the second O site, O is bonded to four equivalent La atoms to form a mixture of edge and corner-sharing OLa4 tetrahedra.
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