SrEu(CoO3)2 is (Cubic) Perovskite-derived structured and crystallizes in the tetragonal P4/mmm space group. Sr(1) is bonded to four equivalent O(3) and eight equivalent O(1) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with eight equivalent Eu(1)O12 cuboctahedra, faces with two equivalent Eu(1)O12 cuboctahedra, faces with four equivalent Sr(1)O12 cuboctahedra, and faces with eight equivalent Co(1)O6 octahedra. Eu(1) is bonded to four equivalent O(2) and eight equivalent O(1) atoms to form EuO12 cuboctahedra that share corners with four equivalent Eu(1)O12 cuboctahedra, corners with eight equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with four equivalent Eu(1)O12 cuboctahedra, and faces with eight equivalent Co(1)O6 octahedra. Co(1) is bonded to one O(2), one O(3), and four equivalent O(1) atoms to form CoO6 octahedra that share corners with six equivalent Co(1)O6 octahedra, faces with four equivalent Sr(1)O12 cuboctahedra, and faces with four equivalent Eu(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-11°. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(1), two equivalent Eu(1), and two equivalent Co(1) atoms to form distorted OSr2Eu2Co2 octahedra that share corners with four equivalent O(3)Sr4Co2 octahedra, corners with fourteen equivalent O(1)Sr2Eu2Co2 octahedra, edges with four equivalent O(1)Sr2Eu2Co2 octahedra, faces with two equivalent O(3)Sr4Co2 octahedra, and faces with four equivalent O(1)Sr2Eu2Co2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the second O site, O(2) is bonded in a distorted linear geometry to four equivalent Eu(1) and two equivalent Co(1) atoms. In the third O site, O(3) is bonded to four equivalent Sr(1) and two equivalent Co(1) atoms to form distorted OSr4Co2 octahedra that share corners with four equivalent O(3)Sr4Co2 octahedra, corners with sixteen equivalent O(1)Sr2Eu2Co2 octahedra, edges with four equivalent O(3)Sr4Co2 octahedra, and faces with eight equivalent O(1)Sr2Eu2Co2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°.
SrEu(CoO3)2 is (Cubic) Perovskite-derived structured and crystallizes in the tetragonal P4/mmm space group. Sr(1) is bonded to four equivalent O(3) and eight equivalent O(1) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with eight equivalent Eu(1)O12 cuboctahedra, faces with two equivalent Eu(1)O12 cuboctahedra, faces with four equivalent Sr(1)O12 cuboctahedra, and faces with eight equivalent Co(1)O6 octahedra. All Sr(1)-O(3) bond lengths are 2.68 Å. All Sr(1)-O(1) bond lengths are 2.81 Å. Eu(1) is bonded to four equivalent O(2) and eight equivalent O(1) atoms to form EuO12 cuboctahedra that share corners with four equivalent Eu(1)O12 cuboctahedra, corners with eight equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with four equivalent Eu(1)O12 cuboctahedra, and faces with eight equivalent Co(1)O6 octahedra. All Eu(1)-O(2) bond lengths are 2.68 Å. All Eu(1)-O(1) bond lengths are 2.59 Å. Co(1) is bonded to one O(2), one O(3), and four equivalent O(1) atoms to form CoO6 octahedra that share corners with six equivalent Co(1)O6 octahedra, faces with four equivalent Sr(1)O12 cuboctahedra, and faces with four equivalent Eu(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-11°. The Co(1)-O(2) bond length is 1.94 Å. The Co(1)-O(3) bond length is 1.90 Å. All Co(1)-O(1) bond lengths are 1.90 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(1), two equivalent Eu(1), and two equivalent Co(1) atoms to form distorted OSr2Eu2Co2 octahedra that share corners with four equivalent O(3)Sr4Co2 octahedra, corners with fourteen equivalent O(1)Sr2Eu2Co2 octahedra, edges with four equivalent O(1)Sr2Eu2Co2 octahedra, faces with two equivalent O(3)Sr4Co2 octahedra, and faces with four equivalent O(1)Sr2Eu2Co2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the second O site, O(2) is bonded in a distorted linear geometry to four equivalent Eu(1) and two equivalent Co(1) atoms. In the third O site, O(3) is bonded to four equivalent Sr(1) and two equivalent Co(1) atoms to form distorted OSr4Co2 octahedra that share corners with four equivalent O(3)Sr4Co2 octahedra, corners with sixteen equivalent O(1)Sr2Eu2Co2 octahedra, edges with four equivalent O(3)Sr4Co2 octahedra, and faces with eight equivalent O(1)Sr2Eu2Co2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°.