V2Sn(PO4)3 crystallizes in the trigonal R-3c space group. V(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form VO6 octahedra that share corners with six equivalent P(1)O4 tetrahedra. Sn(1) is bonded in a distorted hexagonal planar geometry to six equivalent O(2) atoms. P(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form PO4 tetrahedra that share corners with four equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 27-37°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one V(1) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one V(1), one Sn(1), and one P(1) atom.
V2Sn(PO4)3 crystallizes in the trigonal R-3c space group. V(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form VO6 octahedra that share corners with six equivalent P(1)O4 tetrahedra. All V(1)-O(1) bond lengths are 1.93 Å. All V(1)-O(2) bond lengths are 2.05 Å. Sn(1) is bonded in a distorted hexagonal planar geometry to six equivalent O(2) atoms. All Sn(1)-O(2) bond lengths are 2.51 Å. P(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form PO4 tetrahedra that share corners with four equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 27-37°. Both P(1)-O(1) bond lengths are 1.54 Å. Both P(1)-O(2) bond lengths are 1.56 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one V(1) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one V(1), one Sn(1), and one P(1) atom.