Sr4Cr3O10 is (Cubic) Perovskite-like 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 in a 9-coordinate geometry to four equivalent O(2) and five equivalent O(1) atoms. In the second Sr site, Sr(2) is bonded to four equivalent O(2), four equivalent O(3), and four equivalent O(4) atoms to form SrO12 cuboctahedra that share corners with eight equivalent Sr(2)O12 cuboctahedra, faces with five equivalent Sr(2)O12 cuboctahedra, faces with four equivalent Cr(1)O6 octahedra, and faces with four equivalent Cr(2)O6 octahedra. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(3), and four equivalent O(2) atoms to form CrO6 octahedra that share  a cornercorner with one Cr(2)O6 octahedra, corners with four equivalent Cr(1)O6 octahedra, and faces with four equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the second Cr site, Cr(2) is bonded to two equivalent O(3) and four equivalent O(4) atoms to form CrO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with four equivalent Cr(2)O6 octahedra, and faces with eight equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are five inequivalent O sites. In the first O site, O(1) is bonded to five equivalent Sr(1) and one Cr(1) atom to form distorted OSr5Cr octahedra that share  a cornercorner with one O(3)Sr4Cr2 octahedra, corners with four equivalent O(1)Sr5Cr octahedra, corners with twelve equivalent O(2)Sr4Cr2 octahedra, edges with eight equivalent O(1)Sr5Cr octahedra, and faces with four equivalent O(2)Sr4Cr2 octahedra. The corner-sharing octahedral tilt angles range from 0-57°. In the second O site, O(2) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Cr(1) atoms to form distorted OSr4Cr2 octahedra that share corners with two equivalent O(2)Sr4Cr2 octahedra, corners with four equivalent O(3)Sr4Cr2 octahedra, corners with six equivalent O(4)Sr4Cr2 octahedra, corners with six equivalent O(1)Sr5Cr octahedra,  an edgeedge with one O(4)Sr4Cr2 octahedra, edges with two equivalent O(2)Sr4Cr2 octahedra, faces with two equivalent O(3)Sr4Cr2 octahedra, faces with two equivalent O(1)Sr5Cr octahedra, and faces with four equivalent O(2)Sr4Cr2 octahedra. The corner-sharing octahedral tilt angles range from 1-60°. In the third O site, O(3) is bonded to four equivalent Sr(2), one Cr(1), and one Cr(2) atom to form distorted OSr4Cr2 octahedra that share  a cornercorner with one O(1)Sr5Cr octahedra, corners with five equivalent O(3)Sr4Cr2 octahedra, corners with eight equivalent O(2)Sr4Cr2 octahedra, corners with eight equivalent O(4)Sr4Cr2 octahedra, edges with four equivalent O(3)Sr4Cr2 octahedra, faces with four equivalent O(2)Sr4Cr2 octahedra, and faces with four equivalent O(4)Sr4Cr2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the fourth O site, O(4) is bonded to four equivalent Sr(2) and two equivalent Cr(2) atoms to form a mixture of distorted corner, face, and edge-sharing OSr4Cr2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the fifth O site, O(3) is bonded to four equivalent Sr(2), one Cr(1), and one Cr(2) atom to form distorted OSr4Cr2 octahedra that share  a cornercorner with one O(1)Sr5Cr octahedra; corners with five O(3,3)Sr4Cr2 octahedra; corners with eight equivalent O(2)Sr4Cr2 octahedra; corners with eight equivalent O(4)Sr4Cr2 octahedra; edges with four equivalent O(3)Sr4Cr2 octahedra; faces with four equivalent O(2)Sr4Cr2 octahedra; and faces with four equivalent O(4)Sr4Cr2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°.
Sr4Cr3O10 is (Cubic) Perovskite-like 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 in a 9-coordinate geometry to four equivalent O(2) and five equivalent O(1) atoms. All Sr(1)-O(2) bond lengths are 2.70 Å. There is one shorter (2.52 Å) and four longer (2.74 Å) Sr(1)-O(1) bond lengths. In the second Sr site, Sr(2) is bonded to four equivalent O(2), four equivalent O(3), and four equivalent O(4) atoms to form SrO12 cuboctahedra that share corners with eight equivalent Sr(2)O12 cuboctahedra, faces with five equivalent Sr(2)O12 cuboctahedra, faces with four equivalent Cr(1)O6 octahedra, and faces with four equivalent Cr(2)O6 octahedra. All Sr(2)-O(2) bond lengths are 2.75 Å. All Sr(2)-O(3) bond lengths are 2.74 Å. All Sr(2)-O(4) bond lengths are 2.72 Å. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(3), and four equivalent O(2) atoms to form CrO6 octahedra that share  a cornercorner with one Cr(2)O6 octahedra, corners with four equivalent Cr(1)O6 octahedra, and faces with four equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-5°. The Cr(1)-O(1) bond length is 1.97 Å. The Cr(1)-O(3) bond length is 2.08 Å. All Cr(1)-O(2) bond lengths are 1.94 Å. In the second Cr site, Cr(2) is bonded to two equivalent O(3) and four equivalent O(4) atoms to form CrO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with four equivalent Cr(2)O6 octahedra, and faces with eight equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedra are not tilted. Both Cr(2)-O(3) bond lengths are 1.88 Å. All Cr(2)-O(4) bond lengths are 1.94 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded to five equivalent Sr(1) and one Cr(1) atom to form distorted OSr5Cr octahedra that share  a cornercorner with one O(3)Sr4Cr2 octahedra, corners with four equivalent O(1)Sr5Cr octahedra, corners with twelve equivalent O(2)Sr4Cr2 octahedra, edges with eight equivalent O(1)Sr5Cr octahedra, and faces with four equivalent O(2)Sr4Cr2 octahedra. The corner-sharing octahedral tilt angles range from 0-57°. In the second O site, O(2) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Cr(1) atoms to form distorted OSr4Cr2 octahedra that share corners with two equivalent O(2)Sr4Cr2 octahedra, corners with four equivalent O(3)Sr4Cr2 octahedra, corners with six equivalent O(4)Sr4Cr2 octahedra, corners with six equivalent O(1)Sr5Cr octahedra,  an edgeedge with one O(4)Sr4Cr2 octahedra, edges with two equivalent O(2)Sr4Cr2 octahedra, faces with two equivalent O(3)Sr4Cr2 octahedra, faces with two equivalent O(1)Sr5Cr octahedra, and faces with four equivalent O(2)Sr4Cr2 octahedra. The corner-sharing octahedral tilt angles range from 1-60°. In the third O site, O(3) is bonded to four equivalent Sr(2), one Cr(1), and one Cr(2) atom to form distorted OSr4Cr2 octahedra that share  a cornercorner with one O(1)Sr5Cr octahedra, corners with five equivalent O(3)Sr4Cr2 octahedra, corners with eight equivalent O(2)Sr4Cr2 octahedra, corners with eight equivalent O(4)Sr4Cr2 octahedra, edges with four equivalent O(3)Sr4Cr2 octahedra, faces with four equivalent O(2)Sr4Cr2 octahedra, and faces with four equivalent O(4)Sr4Cr2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the fourth O site, O(4) is bonded to four equivalent Sr(2) and two equivalent Cr(2) atoms to form a mixture of distorted corner, face, and edge-sharing OSr4Cr2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the fifth O site, O(3) is bonded to four equivalent Sr(2), one Cr(1), and one Cr(2) atom to form distorted OSr4Cr2 octahedra that share  a cornercorner with one O(1)Sr5Cr octahedra; corners with five O(3,3)Sr4Cr2 octahedra; corners with eight equivalent O(2)Sr4Cr2 octahedra; corners with eight equivalent O(4)Sr4Cr2 octahedra; edges with four equivalent O(3)Sr4Cr2 octahedra; faces with four equivalent O(2)Sr4Cr2 octahedra; and faces with four equivalent O(4)Sr4Cr2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. All O(3)-Sr(2) bond lengths are 2.74 Å. The O(3)-Cr(1) bond length is 2.08 Å. The O(3)-Cr(2) bond length is 1.88 Å.