Materials Data on SmB2 by Materials Project
SmB2 is hexagonal omega structure structured and crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Sm is bonded to twelve equivalent B atoms to form a mixture of edge and face-sharing SmB12 cuboctahedra. All Sm–B bond lengths are 2.79 Å. B is bonded in a 9-coordinate geometry to six equivalent Sm and three equivalent B atoms. All B–B bond lengths are 1.92 Å.
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