Materials Data on U2SbSe2 by Materials Project
U2SbSe2 crystallizes in the tetragonal P4/mmm space group. The structure is two-dimensional and consists of one U2SbSe2 sheet oriented in the (0, 0, 1) direction. U+3.50+ is bonded in a 2-coordinate geometry to one Sb3- and one Se2- atom. The U–Sb bond length is 3.24 Å. The U–Se bond length is 2.81 Å. Sb3- is bonded to two equivalent U+3.50+ and four equivalent Sb3- atoms to form a mixture of edge and corner-sharing SbU2Sb4 octahedra. The corner-sharing octahedral tilt angles are 0°. All Sb–Sb bond lengths are 2.85 Å. Se2- is bonded in a distorted single-bond geometry to one U+3.50+ atom.
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