Y7ReO14 crystallizes in the trigonal R-3m space group. There are three inequivalent Y sites. In the first Y site, Y(1) is bonded to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms to form distorted YO8 hexagonal bipyramids that share edges with four equivalent Y(1)O8 hexagonal bipyramids, edges with two equivalent Re(1)O6 octahedra, and edges with four equivalent Y(2)O6 octahedra. In the second Y site, Y(2) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form distorted YO6 octahedra that share corners with two equivalent Re(1)O6 octahedra, corners with four equivalent Y(2)O6 octahedra, and edges with four equivalent Y(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 43-67°. In the third Y site, Y(3) is bonded in a body-centered cubic geometry to two equivalent O(1) and six equivalent O(2) atoms. Re(1) is bonded to six equivalent O(3) atoms to form ReO6 octahedra that share corners with six equivalent Y(2)O6 octahedra and edges with six equivalent Y(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 43°. There are three inequivalent O sites. In the first O site, O(3) is bonded in a 4-coordinate geometry to one Y(2), two equivalent Y(1), and one Re(1) atom. In the second O site, O(1) is bonded to one Y(3) and three equivalent Y(1) atoms to form a mixture of edge and corner-sharing OY4 tetrahedra. In the third O site, O(2) is bonded to one Y(1), one Y(3), and two equivalent Y(2) atoms to form a mixture of edge and corner-sharing OY4 tetrahedra.
Y7ReO14 crystallizes in the trigonal R-3m space group. There are three inequivalent Y sites. In the first Y site, Y(1) is bonded to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms to form distorted YO8 hexagonal bipyramids that share edges with four equivalent Y(1)O8 hexagonal bipyramids, edges with two equivalent Re(1)O6 octahedra, and edges with four equivalent Y(2)O6 octahedra. Both Y(1)-O(1) bond lengths are 2.26 Å. Both Y(1)-O(2) bond lengths are 2.34 Å. All Y(1)-O(3) bond lengths are 2.71 Å. In the second Y site, Y(2) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form distorted YO6 octahedra that share corners with two equivalent Re(1)O6 octahedra, corners with four equivalent Y(2)O6 octahedra, and edges with four equivalent Y(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 43-67°. Both Y(2)-O(3) bond lengths are 2.26 Å. All Y(2)-O(2) bond lengths are 2.26 Å. In the third Y site, Y(3) is bonded in a body-centered cubic geometry to two equivalent O(1) and six equivalent O(2) atoms. Both Y(3)-O(1) bond lengths are 2.58 Å. All Y(3)-O(2) bond lengths are 2.50 Å. Re(1) is bonded to six equivalent O(3) atoms to form ReO6 octahedra that share corners with six equivalent Y(2)O6 octahedra and edges with six equivalent Y(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 43°. All Re(1)-O(3) bond lengths are 1.89 Å. There are three inequivalent O sites. In the first O site, O(3) is bonded in a 4-coordinate geometry to one Y(2), two equivalent Y(1), and one Re(1) atom. In the second O site, O(1) is bonded to one Y(3) and three equivalent Y(1) atoms to form a mixture of edge and corner-sharing OY4 tetrahedra. In the third O site, O(2) is bonded to one Y(1), one Y(3), and two equivalent Y(2) atoms to form a mixture of edge and corner-sharing OY4 tetrahedra.