Materials Data on Sm2O by Materials Project
Sm2O is trigonal omega-like structured and crystallizes in the tetragonal I4_1/amd space group. The structure is three-dimensional. Sm is bonded in a T-shaped geometry to three equivalent O atoms. There are two shorter (2.46 Å) and one longer (2.57 Å) Sm–O bond lengths. O is bonded to six equivalent Sm atoms to form a mixture of edge and corner-sharing OSm6 octahedra. The corner-sharing octahedral tilt angles are 8°.
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