Sr5Ni2BiO10 is (La,Ba)CuO4-derived structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to two equivalent O(2) and four equivalent O(4) atoms to form SrO6 octahedra that share corners with two equivalent Ni(1)O6 octahedra, corners with four equivalent Sr(1)O6 octahedra, and edges with four equivalent Bi(1)O6 octahedra. The corner-sharing octahedra are not tilted. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. Ni(1) is bonded to one O(2), one O(3), and four equivalent O(1) atoms to form distorted NiO6 octahedra that share  a cornercorner with one Sr(1)O6 octahedra,  a cornercorner with one Bi(1)O6 octahedra, and corners with four equivalent Ni(1)O6 octahedra. The corner-sharing octahedra are not tilted. Bi(1) is bonded to two equivalent O(3) and four equivalent O(4) atoms to form BiO6 octahedra that share corners with two equivalent Ni(1)O6 octahedra, corners with four equivalent Bi(1)O6 octahedra, and edges with four equivalent Sr(1)O6 octahedra. The corner-sharing octahedra are not tilted. There are four inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sr(2) and two equivalent Ni(1) atoms to form distorted OSr4Ni2 octahedra that share corners with two equivalent O(1)Sr4Ni2 octahedra, corners with four equivalent O(4)Sr4Bi2 octahedra, corners with four equivalent O(3)Sr4NiBi octahedra, corners with four equivalent O(2)Sr5Ni octahedra, edges with two equivalent O(1)Sr4Ni2 octahedra, faces with two equivalent O(3)Sr4NiBi octahedra, faces with two equivalent O(2)Sr5Ni octahedra, and faces with four equivalent O(1)Sr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 7-54°. In the second O site, O(2) is bonded to one Sr(1), four equivalent Sr(2), and one Ni(1) atom to form distorted OSr5Ni octahedra that share  a cornercorner with one O(3)Sr4NiBi octahedra, corners with five equivalent O(2)Sr5Ni octahedra, corners with eight equivalent O(1)Sr4Ni2 octahedra, edges with four equivalent O(4)Sr4Bi2 octahedra, edges with four equivalent O(3)Sr4NiBi octahedra, and faces with four equivalent O(1)Sr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the third O site, O(3) is bonded to four equivalent Sr(2), one Ni(1), and one Bi(1) atom to form distorted OSr4NiBi octahedra that share  a cornercorner with one O(2)Sr5Ni octahedra, corners with five equivalent O(3)Sr4NiBi octahedra, corners with eight equivalent O(1)Sr4Ni2 octahedra, edges with four equivalent O(4)Sr4Bi2 octahedra, edges with four equivalent O(2)Sr5Ni octahedra, and faces with four equivalent O(1)Sr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-51°. In the fourth O site, O(4) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Bi(1) atoms to form OSr4Bi2 octahedra that share corners with four equivalent O(4)Sr4Bi2 octahedra, corners with eight equivalent O(1)Sr4Ni2 octahedra, edges with four equivalent O(4)Sr4Bi2 octahedra, edges with four equivalent O(3)Sr4NiBi octahedra, and edges with four equivalent O(2)Sr5Ni octahedra. The corner-sharing octahedral tilt angles range from 0-46°.
Sr5Ni2BiO10 is (La,Ba)CuO4-derived structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to two equivalent O(2) and four equivalent O(4) atoms to form SrO6 octahedra that share corners with two equivalent Ni(1)O6 octahedra, corners with four equivalent Sr(1)O6 octahedra, and edges with four equivalent Bi(1)O6 octahedra. The corner-sharing octahedra are not tilted. Both Sr(1)-O(2) bond lengths are 2.40 Å. All Sr(1)-O(4) bond lengths are 2.67 Å. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. The Sr(2)-O(4) bond length is 2.73 Å. Both Sr(2)-O(2) bond lengths are 2.69 Å. Both Sr(2)-O(3) bond lengths are 2.72 Å. All Sr(2)-O(1) bond lengths are 2.61 Å. Ni(1) is bonded to one O(2), one O(3), and four equivalent O(1) atoms to form distorted NiO6 octahedra that share  a cornercorner with one Sr(1)O6 octahedra,  a cornercorner with one Bi(1)O6 octahedra, and corners with four equivalent Ni(1)O6 octahedra. The corner-sharing octahedra are not tilted. The Ni(1)-O(2) bond length is 2.02 Å. The Ni(1)-O(3) bond length is 2.44 Å. All Ni(1)-O(1) bond lengths are 1.89 Å. Bi(1) is bonded to two equivalent O(3) and four equivalent O(4) atoms to form BiO6 octahedra that share corners with two equivalent Ni(1)O6 octahedra, corners with four equivalent Bi(1)O6 octahedra, and edges with four equivalent Sr(1)O6 octahedra. The corner-sharing octahedra are not tilted. Both Bi(1)-O(3) bond lengths are 2.20 Å. All Bi(1)-O(4) bond lengths are 2.67 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sr(2) and two equivalent Ni(1) atoms to form distorted OSr4Ni2 octahedra that share corners with two equivalent O(1)Sr4Ni2 octahedra, corners with four equivalent O(4)Sr4Bi2 octahedra, corners with four equivalent O(3)Sr4NiBi octahedra, corners with four equivalent O(2)Sr5Ni octahedra, edges with two equivalent O(1)Sr4Ni2 octahedra, faces with two equivalent O(3)Sr4NiBi octahedra, faces with two equivalent O(2)Sr5Ni octahedra, and faces with four equivalent O(1)Sr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 7-54°. In the second O site, O(2) is bonded to one Sr(1), four equivalent Sr(2), and one Ni(1) atom to form distorted OSr5Ni octahedra that share  a cornercorner with one O(3)Sr4NiBi octahedra, corners with five equivalent O(2)Sr5Ni octahedra, corners with eight equivalent O(1)Sr4Ni2 octahedra, edges with four equivalent O(4)Sr4Bi2 octahedra, edges with four equivalent O(3)Sr4NiBi octahedra, and faces with four equivalent O(1)Sr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the third O site, O(3) is bonded to four equivalent Sr(2), one Ni(1), and one Bi(1) atom to form distorted OSr4NiBi octahedra that share  a cornercorner with one O(2)Sr5Ni octahedra, corners with five equivalent O(3)Sr4NiBi octahedra, corners with eight equivalent O(1)Sr4Ni2 octahedra, edges with four equivalent O(4)Sr4Bi2 octahedra, edges with four equivalent O(2)Sr5Ni octahedra, and faces with four equivalent O(1)Sr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-51°. In the fourth O site, O(4) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Bi(1) atoms to form OSr4Bi2 octahedra that share corners with four equivalent O(4)Sr4Bi2 octahedra, corners with eight equivalent O(1)Sr4Ni2 octahedra, edges with four equivalent O(4)Sr4Bi2 octahedra, edges with four equivalent O(3)Sr4NiBi octahedra, and edges with four equivalent O(2)Sr5Ni octahedra. The corner-sharing octahedral tilt angles range from 0-46°.