Sr2MgZrMnO6 crystallizes in the trigonal R3m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 3-coordinate geometry to three equivalent O(1) and six equivalent O(2) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to three equivalent O(2) and six equivalent O(1) atoms. Mg(1) is bonded in a 3-coordinate geometry to three equivalent O(1) atoms. Zr(1) is bonded in a 6-coordinate geometry to three equivalent O(1) and three equivalent O(2) atoms. Mn(1) is bonded in an octahedral geometry to three equivalent O(1) and three equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Sr(1), two equivalent Sr(2), one Mg(1), one Zr(1), and one Mn(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Sr(2), two equivalent Sr(1), one Zr(1), and one Mn(1) atom.
Sr2MgZrMnO6 crystallizes in the trigonal R3m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 3-coordinate geometry to three equivalent O(1) and six equivalent O(2) atoms. All Sr(1)-O(1) bond lengths are 2.36 Å. All Sr(1)-O(2) bond lengths are 3.14 Å. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to three equivalent O(2) and six equivalent O(1) atoms. All Sr(2)-O(2) bond lengths are 2.63 Å. All Sr(2)-O(1) bond lengths are 3.01 Å. Mg(1) is bonded in a 3-coordinate geometry to three equivalent O(1) atoms. All Mg(1)-O(1) bond lengths are 1.92 Å. Zr(1) is bonded in a 6-coordinate geometry to three equivalent O(1) and three equivalent O(2) atoms. All Zr(1)-O(1) bond lengths are 2.42 Å. All Zr(1)-O(2) bond lengths are 1.98 Å. Mn(1) is bonded in an octahedral geometry to three equivalent O(1) and three equivalent O(2) atoms. All Mn(1)-O(1) bond lengths are 2.37 Å. All Mn(1)-O(2) bond lengths are 2.16 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Sr(1), two equivalent Sr(2), one Mg(1), one Zr(1), and one Mn(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Sr(2), two equivalent Sr(1), one Zr(1), and one Mn(1) atom.