SrMgCrO3 crystallizes in the monoclinic Cm space group. Sr(1) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. Mg(1) is bonded in a trigonal non-coplanar geometry to one O(2) and two equivalent O(1) atoms. Cr(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Mg(1), and one Cr(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1), one Mg(1), and two equivalent Cr(1) atoms.
SrMgCrO3 crystallizes in the monoclinic Cm space group. Sr(1) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. The Sr(1)-O(2) bond length is 2.65 Å. There are two shorter (2.48 Å) and two longer (2.68 Å) Sr(1)-O(1) bond lengths. Mg(1) is bonded in a trigonal non-coplanar geometry to one O(2) and two equivalent O(1) atoms. The Mg(1)-O(2) bond length is 1.96 Å. Both Mg(1)-O(1) bond lengths are 1.91 Å. Cr(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Cr(1)-O(1) bond lengths are 2.15 Å. There is one shorter (1.97 Å) and one longer (2.01 Å) Cr(1)-O(2) bond length. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Mg(1), and one Cr(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1), one Mg(1), and two equivalent Cr(1) atoms.