SrEuNbBiO6 crystallizes in the triclinic P-1 space group. Sr(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. Eu(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 Nb sites. In the first Nb site, Nb(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form NbO6 octahedra that share corners with two equivalent Bi(2)O6 octahedra and corners with four equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-36°. In the second Nb site, Nb(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form NbO6 octahedra that share corners with two equivalent Bi(1)O6 octahedra and corners with four equivalent Bi(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-37°. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form BiO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra and corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-37°. In the second Bi site, Bi(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms to form BiO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra and corners with four equivalent Nb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-35°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Eu(1), one Nb(1), and one Bi(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Sr(1), two equivalent Eu(1), one Nb(2), and one Bi(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Sr(1), two equivalent Eu(1), one Nb(1), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Eu(1), one Nb(2), and one Bi(2) atom. In the fifth O site, O(5) is bonded to one Sr(1), one Eu(1), one Nb(1), and one Bi(2) atom to form distorted corner-sharing OSrEuNbBi tetrahedra. In the sixth O site, O(6) is bonded to one Sr(1), one Eu(1), one Nb(2), and one Bi(1) atom to form distorted corner-sharing OSrEuNbBi tetrahedra.
SrEuNbBiO6 crystallizes in the triclinic P-1 space group. Sr(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 Sr(1)-O(2) bond length is 2.79 Å. The Sr(1)-O(3) bond length is 2.82 Å. The Sr(1)-O(5) bond length is 2.49 Å. The Sr(1)-O(6) bond length is 2.63 Å. There is one shorter (2.52 Å) and one longer (3.00 Å) Sr(1)-O(1) bond length. There is one shorter (2.52 Å) and one longer (3.00 Å) Sr(1)-O(4) bond length. Eu(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 Eu(1)-O(1) bond length is 2.79 Å. The Eu(1)-O(4) bond length is 2.79 Å. The Eu(1)-O(5) bond length is 2.56 Å. The Eu(1)-O(6) bond length is 2.46 Å. There is one shorter (2.49 Å) and one longer (3.07 Å) Eu(1)-O(2) bond length. There is one shorter (2.49 Å) and one longer (3.00 Å) Eu(1)-O(3) bond length. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form NbO6 octahedra that share corners with two equivalent Bi(2)O6 octahedra and corners with four equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-36°. Both Nb(1)-O(1) bond lengths are 2.04 Å. Both Nb(1)-O(3) bond lengths are 2.06 Å. Both Nb(1)-O(5) bond lengths are 2.04 Å. In the second Nb site, Nb(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form NbO6 octahedra that share corners with two equivalent Bi(1)O6 octahedra and corners with four equivalent Bi(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-37°. Both Nb(2)-O(2) bond lengths are 2.05 Å. Both Nb(2)-O(4) bond lengths are 2.05 Å. Both Nb(2)-O(6) bond lengths are 2.05 Å. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form BiO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra and corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-37°. Both Bi(1)-O(1) bond lengths are 2.36 Å. Both Bi(1)-O(3) bond lengths are 2.40 Å. Both Bi(1)-O(6) bond lengths are 2.39 Å. In the second Bi site, Bi(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms to form BiO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra and corners with four equivalent Nb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-35°. Both Bi(2)-O(2) bond lengths are 2.38 Å. Both Bi(2)-O(4) bond lengths are 2.39 Å. Both Bi(2)-O(5) bond lengths are 2.38 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Eu(1), one Nb(1), and one Bi(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Sr(1), two equivalent Eu(1), one Nb(2), and one Bi(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Sr(1), two equivalent Eu(1), one Nb(1), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Eu(1), one Nb(2), and one Bi(2) atom. In the fifth O site, O(5) is bonded to one Sr(1), one Eu(1), one Nb(1), and one Bi(2) atom to form distorted corner-sharing OSrEuNbBi tetrahedra. In the sixth O site, O(6) is bonded to one Sr(1), one Eu(1), one Nb(2), and one Bi(1) atom to form distorted corner-sharing OSrEuNbBi tetrahedra.