Sr4La4Cr(NiO5)3 crystallizes in the triclinic P-1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(6) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(4), one O(6), one O(9), two equivalent O(3), two equivalent O(5), and two equivalent O(8) atoms. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to one O(2), one O(4), one O(9), two equivalent O(3), two equivalent O(5), and two equivalent O(8) atoms. In the second La site, La(2) is bonded in a 9-coordinate geometry to one O(8), two equivalent O(1), two equivalent O(2), two equivalent O(6), and two equivalent O(7) atoms. Cr(1) is bonded to two equivalent O(5), two equivalent O(8), and two equivalent O(9) atoms to form CrO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra and corners with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(2), one O(6), one O(7), and two equivalent O(1) atoms to form corner-sharing NiO5 square pyramids. In the second Ni site, Ni(2) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form NiO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra and corners with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent La(2), and two equivalent Ni(1) atoms. In the second O site, O(2) is bonded to two equivalent Sr(1), one La(1), two equivalent La(2), and one Ni(1) atom to form distorted OSr2La3Ni octahedra that share  a cornercorner with one O(9)Sr2La2Cr2 octahedra,  a cornercorner with one O(4)Sr2La2Ni2 octahedra, corners with two equivalent O(7)La4Ni2 octahedra, corners with two equivalent O(5)Sr2La2CrNi octahedra, corners with five equivalent O(6)Sr3La2Ni octahedra, edges with two equivalent O(8)Sr2La3Cr octahedra, edges with two equivalent O(2)Sr2La3Ni octahedra, edges with two equivalent O(3)Sr3La2Ni octahedra, edges with two equivalent O(6)Sr3La2Ni octahedra, and  a faceface with one O(7)La4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 4-53°. In the third O site, O(3) is bonded to one Sr(1), two equivalent Sr(2), two equivalent La(1), and one Ni(2) atom to form distorted OSr3La2Ni octahedra that share  a cornercorner with one O(3)Sr3La2Ni octahedra, corners with four equivalent O(9)Sr2La2Cr2 octahedra, corners with four equivalent O(5)Sr2La2CrNi octahedra, corners with four equivalent O(8)Sr2La3Cr octahedra, edges with two equivalent O(8)Sr2La3Cr octahedra, edges with two equivalent O(2)Sr2La3Ni octahedra, edges with two equivalent O(3)Sr3La2Ni octahedra, edges with two equivalent O(6)Sr3La2Ni octahedra, faces with two equivalent O(5)Sr2La2CrNi octahedra, and faces with two equivalent O(4)Sr2La2Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the fourth O site, O(4) is bonded to two equivalent Sr(2), two equivalent La(1), and two equivalent Ni(2) atoms to form OSr2La2Ni2 octahedra that share corners with two equivalent O(4)Sr2La2Ni2 octahedra, corners with two equivalent O(2)Sr2La3Ni octahedra, corners with two equivalent O(6)Sr3La2Ni octahedra, corners with eight equivalent O(8)Sr2La3Cr octahedra, edges with two equivalent O(9)Sr2La2Cr2 octahedra, faces with four equivalent O(5)Sr2La2CrNi octahedra, and faces with four equivalent O(3)Sr3La2Ni octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the fifth O site, O(5) is bonded to two equivalent Sr(2), two equivalent La(1), one Cr(1), and one Ni(2) atom to form distorted OSr2La2CrNi octahedra that share corners with two equivalent O(5)Sr2La2CrNi octahedra, corners with two equivalent O(2)Sr2La3Ni octahedra, corners with two equivalent O(6)Sr3La2Ni octahedra, corners with four equivalent O(8)Sr2La3Cr octahedra, corners with four equivalent O(3)Sr3La2Ni octahedra, edges with two equivalent O(5)Sr2La2CrNi octahedra, faces with two equivalent O(9)Sr2La2Cr2 octahedra, faces with two equivalent O(4)Sr2La2Ni2 octahedra, faces with two equivalent O(8)Sr2La3Cr octahedra, and faces with two equivalent O(3)Sr3La2Ni octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the sixth O site, O(6) is bonded to one Sr(2), two equivalent Sr(1), two equivalent La(2), and one Ni(1) atom to form OSr3La2Ni octahedra that share  a cornercorner with one O(9)Sr2La2Cr2 octahedra,  a cornercorner with one O(4)Sr2La2Ni2 octahedra, corners with two equivalent O(7)La4Ni2 octahedra, corners with two equivalent O(5)Sr2La2CrNi octahedra, corners with five equivalent O(2)Sr2La3Ni octahedra, edges with two equivalent O(8)Sr2La3Cr octahedra, edges with two equivalent O(2)Sr2La3Ni octahedra, edges with two equivalent O(3)Sr3La2Ni octahedra, edges with two equivalent O(6)Sr3La2Ni octahedra, and  a faceface with one O(7)La4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 4-52°. In the seventh O site, O(7) is bonded to four equivalent La(2) and two equivalent Ni(1) atoms to form distorted OLa4Ni2 octahedra that share corners with four equivalent O(8)Sr2La3Cr octahedra, corners with four equivalent O(2)Sr2La3Ni octahedra, corners with four equivalent O(6)Sr3La2Ni octahedra, edges with two equivalent O(7)La4Ni2 octahedra, faces with two equivalent O(2)Sr2La3Ni octahedra, and faces with two equivalent O(6)Sr3La2Ni octahedra. The corner-sharing octahedral tilt angles range from 46-53°. In the eighth O site, O(8) is bonded to two equivalent Sr(2), one La(2), two equivalent La(1), and one Cr(1) atom to form distorted OSr2La3Cr octahedra that share  a cornercorner with one O(8)Sr2La3Cr octahedra, corners with two equivalent O(7)La4Ni2 octahedra, corners with four equivalent O(5)Sr2La2CrNi octahedra, corners with four equivalent O(4)Sr2La2Ni2 octahedra, corners with four equivalent O(3)Sr3La2Ni octahedra, edges with two equivalent O(8)Sr2La3Cr octahedra, edges with two equivalent O(2)Sr2La3Ni octahedra, edges with two equivalent O(3)Sr3La2Ni octahedra, edges with two equivalent O(6)Sr3La2Ni octahedra, faces with two equivalent O(9)Sr2La2Cr2 octahedra, and faces with two equivalent O(5)Sr2La2CrNi octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the ninth O site, O(9) is bonded to two equivalent Sr(2), two equivalent La(1), and two equivalent Cr(1) atoms to form distorted OSr2La2Cr2 octahedra that share corners with two equivalent O(9)Sr2La2Cr2 octahedra, corners with two equivalent O(2)Sr2La3Ni octahedra, corners with two equivalent O(6)Sr3La2Ni octahedra, corners with eight equivalent O(3)Sr3La2Ni octahedra, edges with two equivalent O(4)Sr2La2Ni2 octahedra, faces with four equivalent O(5)Sr2La2CrNi octahedra, and faces with four equivalent O(8)Sr2La3Cr octahedra. The corner-sharing octahedral tilt angles range from 0-55°.
Sr4La4Cr(NiO5)3 crystallizes in the triclinic P-1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(6) atoms. The Sr(1)-O(3) bond length is 2.41 Å. There is one shorter (2.49 Å) and one longer (2.55 Å) Sr(1)-O(1) bond length. There is one shorter (2.81 Å) and one longer (2.83 Å) Sr(1)-O(2) bond length. There is one shorter (2.72 Å) and one longer (2.76 Å) Sr(1)-O(6) bond length. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(4), one O(6), one O(9), two equivalent O(3), two equivalent O(5), and two equivalent O(8) atoms. The Sr(2)-O(4) bond length is 2.61 Å. The Sr(2)-O(6) bond length is 2.47 Å. The Sr(2)-O(9) bond length is 2.64 Å. Both Sr(2)-O(3) bond lengths are 2.79 Å. There is one shorter (2.65 Å) and one longer (2.66 Å) Sr(2)-O(5) bond length. Both Sr(2)-O(8) bond lengths are 2.81 Å. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to one O(2), one O(4), one O(9), two equivalent O(3), two equivalent O(5), and two equivalent O(8) atoms. The La(1)-O(2) bond length is 2.37 Å. The La(1)-O(4) bond length is 2.56 Å. The La(1)-O(9) bond length is 2.64 Å. There is one shorter (2.63 Å) and one longer (2.64 Å) La(1)-O(3) bond length. Both La(1)-O(5) bond lengths are 2.57 Å. There is one shorter (2.73 Å) and one longer (2.75 Å) La(1)-O(8) bond length. In the second La site, La(2) is bonded in a 9-coordinate geometry to one O(8), two equivalent O(1), two equivalent O(2), two equivalent O(6), and two equivalent O(7) atoms. The La(2)-O(8) bond length is 2.40 Å. There is one shorter (2.86 Å) and one longer (2.87 Å) La(2)-O(1) bond length. There is one shorter (2.69 Å) and one longer (2.75 Å) La(2)-O(2) bond length. There is one shorter (2.66 Å) and one longer (2.71 Å) La(2)-O(6) bond length. There is one shorter (2.63 Å) and one longer (2.66 Å) La(2)-O(7) bond length. Cr(1) is bonded to two equivalent O(5), two equivalent O(8), and two equivalent O(9) atoms to form CrO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra and corners with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. Both Cr(1)-O(5) bond lengths are 1.90 Å. Both Cr(1)-O(8) bond lengths are 2.16 Å. Both Cr(1)-O(9) bond lengths are 1.92 Å. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(2), one O(6), one O(7), and two equivalent O(1) atoms to form corner-sharing NiO5 square pyramids. The Ni(1)-O(2) bond length is 2.23 Å. The Ni(1)-O(6) bond length is 2.15 Å. The Ni(1)-O(7) bond length is 1.94 Å. Both Ni(1)-O(1) bond lengths are 1.94 Å. In the second Ni site, Ni(2) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form NiO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra and corners with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. Both Ni(2)-O(3) bond lengths are 2.05 Å. Both Ni(2)-O(4) bond lengths are 1.92 Å. Both Ni(2)-O(5) bond lengths are 1.96 Å. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent La(2), and two equivalent Ni(1) atoms. In the second O site, O(2) is bonded to two equivalent Sr(1), one La(1), two equivalent La(2), and one Ni(1) atom to form distorted OSr2La3Ni octahedra that share  a cornercorner with one O(9)Sr2La2Cr2 octahedra,  a cornercorner with one O(4)Sr2La2Ni2 octahedra, corners with two equivalent O(7)La4Ni2 octahedra, corners with two equivalent O(5)Sr2La2CrNi octahedra, corners with five equivalent O(6)Sr3La2Ni octahedra, edges with two equivalent O(8)Sr2La3Cr octahedra, edges with two equivalent O(2)Sr2La3Ni octahedra, edges with two equivalent O(3)Sr3La2Ni octahedra, edges with two equivalent O(6)Sr3La2Ni octahedra, and  a faceface with one O(7)La4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 4-53°. In the third O site, O(3) is bonded to one Sr(1), two equivalent Sr(2), two equivalent La(1), and one Ni(2) atom to form distorted OSr3La2Ni octahedra that share  a cornercorner with one O(3)Sr3La2Ni octahedra, corners with four equivalent O(9)Sr2La2Cr2 octahedra, corners with four equivalent O(5)Sr2La2CrNi octahedra, corners with four equivalent O(8)Sr2La3Cr octahedra, edges with two equivalent O(8)Sr2La3Cr octahedra, edges with two equivalent O(2)Sr2La3Ni octahedra, edges with two equivalent O(3)Sr3La2Ni octahedra, edges with two equivalent O(6)Sr3La2Ni octahedra, faces with two equivalent O(5)Sr2La2CrNi octahedra, and faces with two equivalent O(4)Sr2La2Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the fourth O site, O(4) is bonded to two equivalent Sr(2), two equivalent La(1), and two equivalent Ni(2) atoms to form OSr2La2Ni2 octahedra that share corners with two equivalent O(4)Sr2La2Ni2 octahedra, corners with two equivalent O(2)Sr2La3Ni octahedra, corners with two equivalent O(6)Sr3La2Ni octahedra, corners with eight equivalent O(8)Sr2La3Cr octahedra, edges with two equivalent O(9)Sr2La2Cr2 octahedra, faces with four equivalent O(5)Sr2La2CrNi octahedra, and faces with four equivalent O(3)Sr3La2Ni octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the fifth O site, O(5) is bonded to two equivalent Sr(2), two equivalent La(1), one Cr(1), and one Ni(2) atom to form distorted OSr2La2CrNi octahedra that share corners with two equivalent O(5)Sr2La2CrNi octahedra, corners with two equivalent O(2)Sr2La3Ni octahedra, corners with two equivalent O(6)Sr3La2Ni octahedra, corners with four equivalent O(8)Sr2La3Cr octahedra, corners with four equivalent O(3)Sr3La2Ni octahedra, edges with two equivalent O(5)Sr2La2CrNi octahedra, faces with two equivalent O(9)Sr2La2Cr2 octahedra, faces with two equivalent O(4)Sr2La2Ni2 octahedra, faces with two equivalent O(8)Sr2La3Cr octahedra, and faces with two equivalent O(3)Sr3La2Ni octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the sixth O site, O(6) is bonded to one Sr(2), two equivalent Sr(1), two equivalent La(2), and one Ni(1) atom to form OSr3La2Ni octahedra that share  a cornercorner with one O(9)Sr2La2Cr2 octahedra,  a cornercorner with one O(4)Sr2La2Ni2 octahedra, corners with two equivalent O(7)La4Ni2 octahedra, corners with two equivalent O(5)Sr2La2CrNi octahedra, corners with five equivalent O(2)Sr2La3Ni octahedra, edges with two equivalent O(8)Sr2La3Cr octahedra, edges with two equivalent O(2)Sr2La3Ni octahedra, edges with two equivalent O(3)Sr3La2Ni octahedra, edges with two equivalent O(6)Sr3La2Ni octahedra, and  a faceface with one O(7)La4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 4-52°. In the seventh O site, O(7) is bonded to four equivalent La(2) and two equivalent Ni(1) atoms to form distorted OLa4Ni2 octahedra that share corners with four equivalent O(8)Sr2La3Cr octahedra, corners with four equivalent O(2)Sr2La3Ni octahedra, corners with four equivalent O(6)Sr3La2Ni octahedra, edges with two equivalent O(7)La4Ni2 octahedra, faces with two equivalent O(2)Sr2La3Ni octahedra, and faces with two equivalent O(6)Sr3La2Ni octahedra. The corner-sharing octahedral tilt angles range from 46-53°. In the eighth O site, O(8) is bonded to two equivalent Sr(2), one La(2), two equivalent La(1), and one Cr(1) atom to form distorted OSr2La3Cr octahedra that share  a cornercorner with one O(8)Sr2La3Cr octahedra, corners with two equivalent O(7)La4Ni2 octahedra, corners with four equivalent O(5)Sr2La2CrNi octahedra, corners with four equivalent O(4)Sr2La2Ni2 octahedra, corners with four equivalent O(3)Sr3La2Ni octahedra, edges with two equivalent O(8)Sr2La3Cr octahedra, edges with two equivalent O(2)Sr2La3Ni octahedra, edges with two equivalent O(3)Sr3La2Ni octahedra, edges with two equivalent O(6)Sr3La2Ni octahedra, faces with two equivalent O(9)Sr2La2Cr2 octahedra, and faces with two equivalent O(5)Sr2La2CrNi octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the ninth O site, O(9) is bonded to two equivalent Sr(2), two equivalent La(1), and two equivalent Cr(1) atoms to form distorted OSr2La2Cr2 octahedra that share corners with two equivalent O(9)Sr2La2Cr2 octahedra, corners with two equivalent O(2)Sr2La3Ni octahedra, corners with two equivalent O(6)Sr3La2Ni octahedra, corners with eight equivalent O(3)Sr3La2Ni octahedra, edges with two equivalent O(4)Sr2La2Ni2 octahedra, faces with four equivalent O(5)Sr2La2CrNi octahedra, and faces with four equivalent O(8)Sr2La3Cr octahedra. The corner-sharing octahedral tilt angles range from 0-55°.