Sr2MgMoCuO6 crystallizes in the triclinic P-1 space group. Sr(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Mg(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Mo(1) is bonded in an octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Cu(1) is bonded in a linear geometry to two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted see-saw-like geometry to two equivalent Sr(1), one Mg(1), and one Mo(1) atom. In the second O site, O(2) is bonded in a distorted see-saw-like geometry to two equivalent Sr(1), one Mg(1), and one Mo(1) atom. In the third O site, O(3) is bonded to two equivalent Sr(1), one Mo(1), and one Cu(1) atom to form a mixture of distorted edge and corner-sharing OSr2CuMo tetrahedra.
Sr2MgMoCuO6 crystallizes in the triclinic P-1 space group. Sr(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There is one shorter (2.49 Å) and one longer (2.56 Å) Sr(1)-O(1) bond length. There is one shorter (2.54 Å) and one longer (2.62 Å) Sr(1)-O(2) bond length. Both Sr(1)-O(3) bond lengths are 2.52 Å. Mg(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Mg(1)-O(1) bond lengths are 2.01 Å. Both Mg(1)-O(2) bond lengths are 2.10 Å. Mo(1) is bonded in an octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Both Mo(1)-O(1) bond lengths are 2.05 Å. Both Mo(1)-O(2) bond lengths are 1.96 Å. Both Mo(1)-O(3) bond lengths are 2.05 Å. Cu(1) is bonded in a linear geometry to two equivalent O(3) atoms. Both Cu(1)-O(3) bond lengths are 1.80 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted see-saw-like geometry to two equivalent Sr(1), one Mg(1), and one Mo(1) atom. In the second O site, O(2) is bonded in a distorted see-saw-like geometry to two equivalent Sr(1), one Mg(1), and one Mo(1) atom. In the third O site, O(3) is bonded to two equivalent Sr(1), one Mo(1), and one Cu(1) atom to form a mixture of distorted edge and corner-sharing OSr2CuMo tetrahedra.