SrEuC4 crystallizes in the orthorhombic Cmmm space group. Sr(1) is bonded in a distorted q4 geometry to four equivalent C(1) and six equivalent C(2) atoms. Eu(1) is bonded in a distorted q4 geometry to four equivalent C(2) and six equivalent C(1) atoms. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to two equivalent Sr(1), three equivalent Eu(1), and one C(1) atom. In the second C site, C(2) is bonded in a 6-coordinate geometry to three equivalent Sr(1), two equivalent Eu(1), and one C(2) atom.
SrEuC4 crystallizes in the orthorhombic Cmmm space group. Sr(1) is bonded in a distorted q4 geometry to four equivalent C(1) and six equivalent C(2) atoms. All Sr(1)-C(1) bond lengths are 2.94 Å. There are two shorter (2.72 Å) and four longer (2.94 Å) Sr(1)-C(2) bond lengths. Eu(1) is bonded in a distorted q4 geometry to four equivalent C(2) and six equivalent C(1) atoms. All Eu(1)-C(2) bond lengths are 2.94 Å. There are two shorter (2.71 Å) and four longer (2.94 Å) Eu(1)-C(1) bond lengths. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to two equivalent Sr(1), three equivalent Eu(1), and one C(1) atom. The C(1)-C(1) bond length is 1.27 Å. In the second C site, C(2) is bonded in a 6-coordinate geometry to three equivalent Sr(1), two equivalent Eu(1), and one C(2) atom. The C(2)-C(2) bond length is 1.26 Å.