BaCaEuBiO6 is Orthorhombic Perovskite-derived structured and crystallizes in the orthorhombic Pnnn space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form BaO12 cuboctahedra that share faces with four equivalent Ca(1)O6 octahedra and faces with four equivalent Bi(1)O6 octahedra. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to four equivalent O(2) and four equivalent O(3) atoms. Ca(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CaO6 octahedra that share corners with six equivalent Bi(1)O6 octahedra and faces with two equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 22-35°. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a square co-planar geometry to four equivalent O(2) atoms. In the second Eu site, Eu(2) is bonded in a distorted square co-planar geometry to four equivalent O(1) and four equivalent O(3) atoms. Bi(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form BiO6 octahedra that share corners with six equivalent Ca(1)O6 octahedra and faces with two equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 22-35°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Ba(1), one Ca(1), one Eu(2), and one Bi(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ba(1), one Ba(2), one Ca(1), one Eu(1), and one Bi(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(2), one Ca(1), one Eu(2), and one Bi(1) atom.
BaCaEuBiO6 is Orthorhombic Perovskite-derived structured and crystallizes in the orthorhombic Pnnn space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form BaO12 cuboctahedra that share faces with four equivalent Ca(1)O6 octahedra and faces with four equivalent Bi(1)O6 octahedra. All Ba(1)-O(1) bond lengths are 2.97 Å. All Ba(1)-O(2) bond lengths are 3.16 Å. All Ba(1)-O(3) bond lengths are 3.07 Å. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to four equivalent O(2) and four equivalent O(3) atoms. All Ba(2)-O(2) bond lengths are 3.05 Å. All Ba(2)-O(3) bond lengths are 2.62 Å. Ca(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CaO6 octahedra that share corners with six equivalent Bi(1)O6 octahedra and faces with two equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 22-35°. Both Ca(1)-O(1) bond lengths are 2.33 Å. Both Ca(1)-O(2) bond lengths are 2.33 Å. Both Ca(1)-O(3) bond lengths are 2.25 Å. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a square co-planar geometry to four equivalent O(2) atoms. All Eu(1)-O(2) bond lengths are 2.37 Å. In the second Eu site, Eu(2) is bonded in a distorted square co-planar geometry to four equivalent O(1) and four equivalent O(3) atoms. All Eu(2)-O(1) bond lengths are 2.39 Å. All Eu(2)-O(3) bond lengths are 3.05 Å. Bi(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form BiO6 octahedra that share corners with six equivalent Ca(1)O6 octahedra and faces with two equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 22-35°. Both Bi(1)-O(1) bond lengths are 2.16 Å. Both Bi(1)-O(2) bond lengths are 2.15 Å. Both Bi(1)-O(3) bond lengths are 2.11 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Ba(1), one Ca(1), one Eu(2), and one Bi(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ba(1), one Ba(2), one Ca(1), one Eu(1), and one Bi(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(2), one Ca(1), one Eu(2), and one Bi(1) atom.