CaEuV4O12 crystallizes in the tetragonal P4/mmm space group. Ca(1) is bonded to four equivalent O(3) and eight equivalent O(1) atoms to form CaO12 cuboctahedra that share corners with four equivalent Ca(1)O12 cuboctahedra, corners with eight equivalent Eu(1)O12 cuboctahedra, and faces with eight equivalent V(1)O6 octahedra. Eu(1) is bonded to four equivalent O(2) and eight equivalent O(1) atoms to form EuO12 cuboctahedra that share corners with four equivalent Eu(1)O12 cuboctahedra, corners with eight equivalent Ca(1)O12 cuboctahedra, and faces with eight equivalent V(1)O6 octahedra. V(1) is bonded to one O(2), one O(3), and four equivalent O(1) atoms to form VO6 octahedra that share corners with six equivalent V(1)O6 octahedra, faces with two equivalent Ca(1)O12 cuboctahedra, and faces with two equivalent Eu(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Ca(1), one Eu(1), and two equivalent V(1) atoms. In the second O site, O(2) is bonded in a distorted linear geometry to two equivalent Eu(1) and two equivalent V(1) atoms. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Ca(1) and two equivalent V(1) atoms.
CaEuV4O12 crystallizes in the tetragonal P4/mmm space group. Ca(1) is bonded to four equivalent O(3) and eight equivalent O(1) atoms to form CaO12 cuboctahedra that share corners with four equivalent Ca(1)O12 cuboctahedra, corners with eight equivalent Eu(1)O12 cuboctahedra, and faces with eight equivalent V(1)O6 octahedra. All Ca(1)-O(3) bond lengths are 2.66 Å. All Ca(1)-O(1) bond lengths are 2.67 Å. Eu(1) is bonded to four equivalent O(2) and eight equivalent O(1) atoms to form EuO12 cuboctahedra that share corners with four equivalent Eu(1)O12 cuboctahedra, corners with eight equivalent Ca(1)O12 cuboctahedra, and faces with eight equivalent V(1)O6 octahedra. All Eu(1)-O(2) bond lengths are 2.66 Å. All Eu(1)-O(1) bond lengths are 2.66 Å. V(1) is bonded to one O(2), one O(3), and four equivalent O(1) atoms to form VO6 octahedra that share corners with six equivalent V(1)O6 octahedra, faces with two equivalent Ca(1)O12 cuboctahedra, and faces with two equivalent Eu(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. The V(1)-O(2) bond length is 1.90 Å. The V(1)-O(3) bond length is 1.87 Å. All V(1)-O(1) bond lengths are 1.88 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Ca(1), one Eu(1), and two equivalent V(1) atoms. In the second O site, O(2) is bonded in a distorted linear geometry to two equivalent Eu(1) and two equivalent V(1) atoms. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Ca(1) and two equivalent V(1) atoms.