Eu2PrNbO6 crystallizes in the cubic Pn-3 space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a q6 geometry to twelve equivalent O(1) atoms. In the second Eu site, Eu(2) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. Pr(1) is bonded to six equivalent O(1) atoms to form PrO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 29°. Nb(1) is bonded to six equivalent O(1) atoms to form NbO6 octahedra that share corners with six equivalent Pr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 29°. O(1) is bonded in a 3-coordinate geometry to one Eu(1), one Eu(2), one Pr(1), and one Nb(1) atom.
Eu2PrNbO6 crystallizes in the cubic Pn-3 space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a q6 geometry to twelve equivalent O(1) atoms. All Eu(1)-O(1) bond lengths are 3.01 Å. In the second Eu site, Eu(2) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. All Eu(2)-O(1) bond lengths are 2.46 Å. Pr(1) is bonded to six equivalent O(1) atoms to form PrO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 29°. All Pr(1)-O(1) bond lengths are 2.36 Å. Nb(1) is bonded to six equivalent O(1) atoms to form NbO6 octahedra that share corners with six equivalent Pr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 29°. All Nb(1)-O(1) bond lengths are 2.04 Å. O(1) is bonded in a 3-coordinate geometry to one Eu(1), one Eu(2), one Pr(1), and one Nb(1) atom.