Materials Data on USeO6 by Materials Project
USeO6 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. U6+ is bonded to seven O2- atoms to form distorted UO7 pentagonal bipyramids that share corners with two equivalent UO7 pentagonal bipyramids and corners with four equivalent SeO4 tetrahedra. There are a spread of U–O bond distances ranging from 1.79–2.46 Å. Se6+ is bonded to four O2- atoms to form SeO4 tetrahedra that share corners with four equivalent UO7 pentagonal bipyramids. There are a spread of Se–O bond distances ranging from 1.66–1.68 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent U6+ atoms. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one U6+ and one Se6+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to one U6+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one U6+ and one Se6+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one U6+ and one Se6+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one U6+ and one Se6+ atom.