BaSrEuCrO6 is Orthorhombic Perovskite-derived structured and crystallizes in the triclinic P-1 space group. Ba(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(5), one O(6), two equivalent O(1), and two equivalent O(4) atoms. Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(4), one O(5), one O(6), two equivalent O(2), and two equivalent O(3) atoms. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form EuO6 octahedra that share corners with two equivalent Cr(2)O6 octahedra and corners with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 24-25°. In the second Eu site, Eu(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form EuO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra and corners with four equivalent Cr(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 23-27°. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form CrO6 octahedra that share corners with two equivalent Eu(2)O6 octahedra and corners with four equivalent Eu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 25-27°. In the second Cr site, Cr(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms to form CrO6 octahedra that share corners with two equivalent Eu(1)O6 octahedra and corners with four equivalent Eu(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 23-27°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to two equivalent Ba(1), one Sr(1), one Eu(1), and one Cr(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Ba(1), two equivalent Sr(1), one Eu(2), and one Cr(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Ba(1), two equivalent Sr(1), one Eu(1), and one Cr(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to two equivalent Ba(1), one Sr(1), one Eu(2), and one Cr(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Ba(1), one Sr(1), one Eu(1), and one Cr(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Ba(1), one Sr(1), one Eu(2), and one Cr(1) atom.
BaSrEuCrO6 is Orthorhombic Perovskite-derived structured and crystallizes in the triclinic P-1 space group. Ba(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(5), one O(6), two equivalent O(1), and two equivalent O(4) atoms. The Ba(1)-O(2) bond length is 2.82 Å. The Ba(1)-O(3) bond length is 2.81 Å. The Ba(1)-O(5) bond length is 2.60 Å. The Ba(1)-O(6) bond length is 2.73 Å. There is one shorter (2.64 Å) and one longer (2.93 Å) Ba(1)-O(1) bond length. There is one shorter (2.63 Å) and one longer (3.00 Å) Ba(1)-O(4) bond length. Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(4), one O(5), one O(6), two equivalent O(2), and two equivalent O(3) atoms. The Sr(1)-O(1) bond length is 2.83 Å. The Sr(1)-O(4) bond length is 2.79 Å. The Sr(1)-O(5) bond length is 2.64 Å. The Sr(1)-O(6) bond length is 2.56 Å. There is one shorter (2.57 Å) and one longer (2.86 Å) Sr(1)-O(2) bond length. There is one shorter (2.58 Å) and one longer (2.99 Å) Sr(1)-O(3) bond length. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form EuO6 octahedra that share corners with two equivalent Cr(2)O6 octahedra and corners with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 24-25°. Both Eu(1)-O(1) bond lengths are 2.32 Å. Both Eu(1)-O(3) bond lengths are 2.38 Å. Both Eu(1)-O(5) bond lengths are 2.31 Å. In the second Eu site, Eu(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form EuO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra and corners with four equivalent Cr(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 23-27°. Both Eu(2)-O(2) bond lengths are 2.36 Å. Both Eu(2)-O(4) bond lengths are 2.38 Å. Both Eu(2)-O(6) bond lengths are 2.37 Å. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form CrO6 octahedra that share corners with two equivalent Eu(2)O6 octahedra and corners with four equivalent Eu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 25-27°. Both Cr(1)-O(1) bond lengths are 1.93 Å. Both Cr(1)-O(3) bond lengths are 1.94 Å. Both Cr(1)-O(6) bond lengths are 1.92 Å. In the second Cr site, Cr(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms to form CrO6 octahedra that share corners with two equivalent Eu(1)O6 octahedra and corners with four equivalent Eu(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 23-27°. Both Cr(2)-O(2) bond lengths are 1.98 Å. Both Cr(2)-O(4) bond lengths are 1.85 Å. Both Cr(2)-O(5) bond lengths are 1.96 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to two equivalent Ba(1), one Sr(1), one Eu(1), and one Cr(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Ba(1), two equivalent Sr(1), one Eu(2), and one Cr(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Ba(1), two equivalent Sr(1), one Eu(1), and one Cr(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to two equivalent Ba(1), one Sr(1), one Eu(2), and one Cr(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Ba(1), one Sr(1), one Eu(1), and one Cr(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Ba(1), one Sr(1), one Eu(2), and one Cr(1) atom.