Eu2V2O5 crystallizes in the orthorhombic Ima2 space group. Eu(1) is bonded in a 8-coordinate geometry to one O(3), three equivalent O(2), and four equivalent O(1) atoms. There are two inequivalent V sites. In the first V site, V(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form VO6 octahedra that share corners with four equivalent V(1)O6 octahedra and corners with two equivalent V(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 10°. In the second V site, V(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form VO4 tetrahedra that share corners with two equivalent V(1)O6 octahedra and corners with two equivalent V(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 35°. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Eu(1) and two equivalent V(1) atoms to form distorted OEu4V2 octahedra that share corners with two equivalent O(1)Eu4V2 octahedra, corners with four equivalent O(3)Eu2V2 tetrahedra, edges with two equivalent O(1)Eu4V2 octahedra, and faces with four equivalent O(1)Eu4V2 octahedra. The corner-sharing octahedral tilt angles are 2°. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Eu(1), one V(1), and one V(2) atom. In the third O site, O(3) is bonded to two equivalent Eu(1) and two equivalent V(2) atoms to form distorted OEu2V2 tetrahedra that share corners with eight equivalent O(1)Eu4V2 octahedra and corners with two equivalent O(3)Eu2V2 tetrahedra. The corner-sharing octahedral tilt angles range from 22-79°.
Eu2V2O5 crystallizes in the orthorhombic Ima2 space group. Eu(1) is bonded in a 8-coordinate geometry to one O(3), three equivalent O(2), and four equivalent O(1) atoms. The Eu(1)-O(3) bond length is 2.44 Å. There are a spread of Eu(1)-O(2) bond distances ranging from 2.46-2.96 Å. There are a spread of Eu(1)-O(1) bond distances ranging from 2.58-2.68 Å. There are two inequivalent V sites. In the first V site, V(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form VO6 octahedra that share corners with four equivalent V(1)O6 octahedra and corners with two equivalent V(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 10°. Both V(1)-O(2) bond lengths are 2.20 Å. All V(1)-O(1) bond lengths are 2.01 Å. In the second V site, V(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form VO4 tetrahedra that share corners with two equivalent V(1)O6 octahedra and corners with two equivalent V(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 35°. Both V(2)-O(2) bond lengths are 1.93 Å. There is one shorter (1.96 Å) and one longer (2.00 Å) V(2)-O(3) bond length. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Eu(1) and two equivalent V(1) atoms to form distorted OEu4V2 octahedra that share corners with two equivalent O(1)Eu4V2 octahedra, corners with four equivalent O(3)Eu2V2 tetrahedra, edges with two equivalent O(1)Eu4V2 octahedra, and faces with four equivalent O(1)Eu4V2 octahedra. The corner-sharing octahedral tilt angles are 2°. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Eu(1), one V(1), and one V(2) atom. In the third O site, O(3) is bonded to two equivalent Eu(1) and two equivalent V(2) atoms to form distorted OEu2V2 tetrahedra that share corners with eight equivalent O(1)Eu4V2 octahedra and corners with two equivalent O(3)Eu2V2 tetrahedra. The corner-sharing octahedral tilt angles range from 22-79°.