Materials Data on UCoSe3 by Materials Project
UCoSe3 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. U4+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of U–Se bond distances ranging from 2.76–3.06 Å. Co2+ is bonded to six Se2- atoms to form corner-sharing CoSe6 octahedra. The corner-sharing octahedra tilt angles range from 41–48°. There are a spread of Co–Se bond distances ranging from 2.44–2.54 Å. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded to two equivalent U4+ and two equivalent Co2+ atoms to form distorted corner-sharing SeU2Co2 tetrahedra. In the second Se2- site, Se2- is bonded in a 5-coordinate geometry to three equivalent U4+ and two equivalent Co2+ atoms.
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