Materials Data on ErCr2O2 by Materials Project
ErCr2O2 crystallizes in the tetragonal I4_1/amd space group. The structure is three-dimensional. Er is bonded in a linear geometry to two equivalent O atoms. Both Er–O bond lengths are 2.12 Å. Cr is bonded in a 1-coordinate geometry to three equivalent O atoms. There are one shorter (2.00 Å) and two longer (2.39 Å) Cr–O bond lengths. O is bonded in a distorted rectangular see-saw-like geometry to one Er and three equivalent Cr atoms.
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