Materials Data on Rb2U(SeO6)2 by Materials Project
Rb2U(SeO6)2 crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. there are two inequivalent Rb sites. In the first Rb site, Rb is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of Rb–O bond distances ranging from 2.95–3.38 Å. In the second Rb site, Rb is bonded in a 9-coordinate geometry to nine O atoms. There are a spread of Rb–O bond distances ranging from 2.89–3.42 Å. U is bonded to seven O atoms to form distorted UO7 pentagonal bipyramids that share corners with four SeO4 tetrahedra. There are a spread of U–O bond distances ranging from 1.82–2.45 Å. There are two inequivalent Se sites. In the first Se site, Se is bonded to four O atoms to form SeO4 tetrahedra that share corners with two equivalent UO7 pentagonal bipyramids. There are a spread of Se–O bond distances ranging from 1.65–1.71 Å. In the second Se site, Se is bonded to four O atoms to form SeO4 tetrahedra that share corners with two equivalent UO7 pentagonal bipyramids. There are a spread of Se–O bond distances ranging from 1.65–1.71 Å. There are twelve inequivalent O sites. In the first O site, O is bonded in a distorted single-bond geometry to two equivalent Rb and one Se atom. In the second O site, O is bonded in a bent 120 degrees geometry to two equivalent Rb atoms. In the third O site, O is bonded in a 2-coordinate geometry to one Rb, one U, and one Se atom. In the fourth O site, O is bonded in a 2-coordinate geometry to one Rb, one U, and one Se atom. In the fifth O site, O is bonded in a 3-coordinate geometry to one Rb, one U, and one Se atom. In the sixth O site, O is bonded in a distorted single-bond geometry to one Rb and one Se atom. In the seventh O site, O is bonded in a single-bond geometry to one U atom. In the eighth O site, O is bonded in a single-bond geometry to three Rb and one U atom. In the ninth O site, O is bonded in a distorted bent 120 degrees geometry to one U and one Se atom. In the tenth O site, O is bonded in a distorted single-bond geometry to one Rb and one U atom. In the eleventh O site, O is bonded in a distorted single-bond geometry to two Rb and one Se atom. In the twelfth O site, O is bonded in a 1-coordinate geometry to two Rb and one Se atom.