Sr2MgAg2Cu(SO)2 crystallizes in the monoclinic Cm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to four equivalent S(2) and four equivalent O(1) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to four equivalent S(1) and four equivalent O(1) atoms. Mg(1) is bonded in a distorted single-bond geometry to four equivalent Ag(1) and one S(2) atom. Ag(1) is bonded in a 4-coordinate geometry to two equivalent Mg(1) and two equivalent S(1) atoms. Cu(1) is bonded in a rectangular see-saw-like geometry to one S(2) and four equivalent O(1) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded in a 8-coordinate geometry to four equivalent Sr(2) and four equivalent Ag(1) atoms. In the second S site, S(2) is bonded in a 6-coordinate geometry to four equivalent Sr(1), one Mg(1), and one Cu(1) atom. O(1) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Cu(1) atoms to form a mixture of face, corner, and edge-sharing OSr4Cu2 octahedra. The corner-sharing octahedral tilt angles are 3°.
Sr2MgAg2Cu(SO)2 crystallizes in the monoclinic Cm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to four equivalent S(2) and four equivalent O(1) atoms. There are three shorter (3.06 Å) and one longer (3.08 Å) Sr(1)-S(2) bond length. There are two shorter (2.68 Å) and two longer (2.69 Å) Sr(1)-O(1) bond lengths. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to four equivalent S(1) and four equivalent O(1) atoms. There are a spread of Sr(2)-S(1) bond distances ranging from 3.16-3.20 Å. All Sr(2)-O(1) bond lengths are 2.56 Å. Mg(1) is bonded in a distorted single-bond geometry to four equivalent Ag(1) and one S(2) atom. There are two shorter (2.81 Å) and two longer (2.90 Å) Mg(1)-Ag(1) bond lengths. The Mg(1)-S(2) bond length is 2.31 Å. Ag(1) is bonded in a 4-coordinate geometry to two equivalent Mg(1) and two equivalent S(1) atoms. There is one shorter (2.66 Å) and one longer (2.76 Å) Ag(1)-S(1) bond length. Cu(1) is bonded in a rectangular see-saw-like geometry to one S(2) and four equivalent O(1) atoms. The Cu(1)-S(2) bond length is 2.98 Å. All Cu(1)-O(1) bond lengths are 1.99 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded in a 8-coordinate geometry to four equivalent Sr(2) and four equivalent Ag(1) atoms. In the second S site, S(2) is bonded in a 6-coordinate geometry to four equivalent Sr(1), one Mg(1), and one Cu(1) atom. O(1) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Cu(1) atoms to form a mixture of face, corner, and edge-sharing OSr4Cu2 octahedra. The corner-sharing octahedral tilt angles are 3°.