Sr3Sm(CoO4)2 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Amm2 space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(3), two equivalent O(4), and four equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and four equivalent O(5) atoms. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and four equivalent O(5) atoms. Sm(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(5) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(3), and four equivalent O(5) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 4°. In the second Co site, Co(2) is bonded to one O(1), one O(4), and four equivalent O(5) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 4°. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), two equivalent Sr(2), two equivalent Sr(3), and one Co(2) atom to form OSr5Co octahedra that share  a cornercorner with one O(4)Sr3Sm2Co octahedra, corners with four equivalent O(1)Sr5Co octahedra, corners with twelve equivalent O(5)Sr3SmCo2 octahedra, edges with two equivalent O(3)Sr3Sm2Co octahedra, edges with two equivalent O(4)Sr3Sm2Co octahedra, edges with four equivalent O(2)Sr4SmCo octahedra, and faces with four equivalent O(5)Sr3SmCo2 octahedra. The corner-sharing octahedral tilt angles range from 0-57°. In the second O site, O(2) is bonded to two equivalent Sr(2), two equivalent Sr(3), one Sm(1), and one Co(1) atom to form distorted OSr4SmCo octahedra that share  a cornercorner with one O(3)Sr3Sm2Co octahedra, corners with four equivalent O(2)Sr4SmCo octahedra, corners with twelve equivalent O(5)Sr3SmCo2 octahedra, edges with two equivalent O(3)Sr3Sm2Co octahedra, edges with two equivalent O(4)Sr3Sm2Co octahedra, edges with four equivalent O(1)Sr5Co octahedra, and faces with four equivalent O(5)Sr3SmCo2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the third O site, O(3) is bonded to one Sr(3), two equivalent Sr(1), two equivalent Sm(1), and one Co(1) atom to form distorted OSr3Sm2Co octahedra that share  a cornercorner with one O(2)Sr4SmCo octahedra, corners with four equivalent O(3)Sr3Sm2Co octahedra, corners with twelve equivalent O(5)Sr3SmCo2 octahedra, edges with two equivalent O(2)Sr4SmCo octahedra, edges with two equivalent O(1)Sr5Co octahedra, edges with four equivalent O(4)Sr3Sm2Co octahedra, and faces with four equivalent O(5)Sr3SmCo2 octahedra. The corner-sharing octahedral tilt angles range from 0-56°. In the fourth O site, O(4) is bonded to one Sr(2), two equivalent Sr(1), two equivalent Sm(1), and one Co(2) atom to form distorted OSr3Sm2Co octahedra that share  a cornercorner with one O(1)Sr5Co octahedra, corners with four equivalent O(4)Sr3Sm2Co octahedra, corners with twelve equivalent O(5)Sr3SmCo2 octahedra, edges with two equivalent O(2)Sr4SmCo octahedra, edges with two equivalent O(1)Sr5Co octahedra, edges with four equivalent O(3)Sr3Sm2Co octahedra, and faces with four equivalent O(5)Sr3SmCo2 octahedra. The corner-sharing octahedral tilt angles range from 0-56°. In the fifth O site, O(5) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sm(1), one Co(1), and one Co(2) atom to form distorted OSr3SmCo2 octahedra that share corners with two equivalent O(5)Sr3SmCo2 octahedra, corners with three equivalent O(3)Sr3Sm2Co octahedra, corners with three equivalent O(4)Sr3Sm2Co octahedra, corners with three equivalent O(2)Sr4SmCo octahedra, corners with three equivalent O(1)Sr5Co octahedra, edges with two equivalent O(5)Sr3SmCo2 octahedra,  a faceface with one O(3)Sr3Sm2Co octahedra,  a faceface with one O(4)Sr3Sm2Co octahedra,  a faceface with one O(2)Sr4SmCo octahedra,  a faceface with one O(1)Sr5Co octahedra, and faces with four equivalent O(5)Sr3SmCo2 octahedra. The corner-sharing octahedral tilt angles range from 4-57°.
Sr3Sm(CoO4)2 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Amm2 space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(3), two equivalent O(4), and four equivalent O(5) atoms. The Sr(1)-O(1) bond length is 2.48 Å. Both Sr(1)-O(3) bond lengths are 2.70 Å. Both Sr(1)-O(4) bond lengths are 2.68 Å. All Sr(1)-O(5) bond lengths are 2.63 Å. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and four equivalent O(5) atoms. The Sr(2)-O(4) bond length is 2.47 Å. Both Sr(2)-O(1) bond lengths are 2.68 Å. Both Sr(2)-O(2) bond lengths are 2.73 Å. All Sr(2)-O(5) bond lengths are 2.69 Å. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and four equivalent O(5) atoms. The Sr(3)-O(3) bond length is 2.43 Å. Both Sr(3)-O(1) bond lengths are 2.69 Å. Both Sr(3)-O(2) bond lengths are 2.71 Å. All Sr(3)-O(5) bond lengths are 2.66 Å. Sm(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(5) atoms. The Sm(1)-O(2) bond length is 2.31 Å. Both Sm(1)-O(3) bond lengths are 2.69 Å. Both Sm(1)-O(4) bond lengths are 2.70 Å. All Sm(1)-O(5) bond lengths are 2.51 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(3), and four equivalent O(5) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 4°. The Co(1)-O(2) bond length is 2.24 Å. The Co(1)-O(3) bond length is 2.04 Å. All Co(1)-O(5) bond lengths are 1.92 Å. In the second Co site, Co(2) is bonded to one O(1), one O(4), and four equivalent O(5) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 4°. The Co(2)-O(1) bond length is 1.97 Å. The Co(2)-O(4) bond length is 2.01 Å. All Co(2)-O(5) bond lengths are 1.88 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), two equivalent Sr(2), two equivalent Sr(3), and one Co(2) atom to form OSr5Co octahedra that share  a cornercorner with one O(4)Sr3Sm2Co octahedra, corners with four equivalent O(1)Sr5Co octahedra, corners with twelve equivalent O(5)Sr3SmCo2 octahedra, edges with two equivalent O(3)Sr3Sm2Co octahedra, edges with two equivalent O(4)Sr3Sm2Co octahedra, edges with four equivalent O(2)Sr4SmCo octahedra, and faces with four equivalent O(5)Sr3SmCo2 octahedra. The corner-sharing octahedral tilt angles range from 0-57°. In the second O site, O(2) is bonded to two equivalent Sr(2), two equivalent Sr(3), one Sm(1), and one Co(1) atom to form distorted OSr4SmCo octahedra that share  a cornercorner with one O(3)Sr3Sm2Co octahedra, corners with four equivalent O(2)Sr4SmCo octahedra, corners with twelve equivalent O(5)Sr3SmCo2 octahedra, edges with two equivalent O(3)Sr3Sm2Co octahedra, edges with two equivalent O(4)Sr3Sm2Co octahedra, edges with four equivalent O(1)Sr5Co octahedra, and faces with four equivalent O(5)Sr3SmCo2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the third O site, O(3) is bonded to one Sr(3), two equivalent Sr(1), two equivalent Sm(1), and one Co(1) atom to form distorted OSr3Sm2Co octahedra that share  a cornercorner with one O(2)Sr4SmCo octahedra, corners with four equivalent O(3)Sr3Sm2Co octahedra, corners with twelve equivalent O(5)Sr3SmCo2 octahedra, edges with two equivalent O(2)Sr4SmCo octahedra, edges with two equivalent O(1)Sr5Co octahedra, edges with four equivalent O(4)Sr3Sm2Co octahedra, and faces with four equivalent O(5)Sr3SmCo2 octahedra. The corner-sharing octahedral tilt angles range from 0-56°. In the fourth O site, O(4) is bonded to one Sr(2), two equivalent Sr(1), two equivalent Sm(1), and one Co(2) atom to form distorted OSr3Sm2Co octahedra that share  a cornercorner with one O(1)Sr5Co octahedra, corners with four equivalent O(4)Sr3Sm2Co octahedra, corners with twelve equivalent O(5)Sr3SmCo2 octahedra, edges with two equivalent O(2)Sr4SmCo octahedra, edges with two equivalent O(1)Sr5Co octahedra, edges with four equivalent O(3)Sr3Sm2Co octahedra, and faces with four equivalent O(5)Sr3SmCo2 octahedra. The corner-sharing octahedral tilt angles range from 0-56°. In the fifth O site, O(5) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sm(1), one Co(1), and one Co(2) atom to form distorted OSr3SmCo2 octahedra that share corners with two equivalent O(5)Sr3SmCo2 octahedra, corners with three equivalent O(3)Sr3Sm2Co octahedra, corners with three equivalent O(4)Sr3Sm2Co octahedra, corners with three equivalent O(2)Sr4SmCo octahedra, corners with three equivalent O(1)Sr5Co octahedra, edges with two equivalent O(5)Sr3SmCo2 octahedra,  a faceface with one O(3)Sr3Sm2Co octahedra,  a faceface with one O(4)Sr3Sm2Co octahedra,  a faceface with one O(2)Sr4SmCo octahedra,  a faceface with one O(1)Sr5Co octahedra, and faces with four equivalent O(5)Sr3SmCo2 octahedra. The corner-sharing octahedral tilt angles range from 4-57°.