Sr4MgMn2Cu3(SO)4 crystallizes in the triclinic P1 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 3-coordinate geometry to one S(3), one S(4), one O(1), one O(3), and one O(4) atom. In the second Sr site, Sr(2) is bonded in a 3-coordinate geometry to one S(3), one S(4), one O(1), one O(3), and one O(4) atom. In the third Sr site, Sr(3) is bonded in a 4-coordinate geometry to one Cu(2), two equivalent S(1), two equivalent S(2), one O(1), one O(2), one O(3), and one O(4) atom. In the fourth Sr site, Sr(4) is bonded in a 4-coordinate geometry to one Cu(2), two equivalent S(1), two equivalent S(2), one O(1), one O(2), one O(3), and one O(4) atom. Mg(1) is bonded in a distorted single-bond geometry to one Cu(2), one S(3), one S(4), and one O(2) atom. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one S(2), one O(1), one O(2), one O(3), and one O(4) atom to form distorted MnSO4 square pyramids that share corners with four equivalent Mn(2)SO4 square pyramids and  a cornercorner with one Cu(1)S4 tetrahedra. In the second Mn site, Mn(2) is bonded to one S(1), one O(1), one O(2), one O(3), and one O(4) atom to form distorted MnSO4 square pyramids that share corners with four equivalent Mn(1)SO4 square pyramids and  a cornercorner with one Cu(1)S4 tetrahedra. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form distorted CuS4 tetrahedra that share  a cornercorner with one Mn(1)SO4 square pyramid and  a cornercorner with one Mn(2)SO4 square pyramid. In the second Cu site, Cu(2) is bonded in a 7-coordinate geometry to one Sr(3), one Sr(4), one Mg(1), one S(1), one S(2), one S(3), and one S(4) atom. In the third Cu site, Cu(3) is bonded in a 4-coordinate geometry to one S(1), one S(2), one S(3), and one S(4) atom. There are four inequivalent S sites. In the first S site, S(1) is bonded in a 8-coordinate geometry to two equivalent Sr(3), two equivalent Sr(4), one Mn(2), one Cu(1), one Cu(2), and one Cu(3) atom. In the second S site, S(2) is bonded in a 8-coordinate geometry to two equivalent Sr(3), two equivalent Sr(4), one Mn(1), one Cu(1), one Cu(2), and one Cu(3) atom. In the third S site, S(3) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Mg(1), one Cu(1), one Cu(2), and one Cu(3) atom. In the fourth S site, S(4) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Mg(1), one Cu(1), one Cu(2), and one Cu(3) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mn(1), and one Mn(2) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Sr(3), one Sr(4), one Mg(1), one Mn(1), and one Mn(2) atom. In the third O site, O(3) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mn(1), and one Mn(2) atom to form a mixture of distorted corner and edge-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles are 18°. In the fourth O site, O(4) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mn(1), and one Mn(2) atom to form a mixture of distorted corner and edge-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles are 18°.
Sr4MgMn2Cu3(SO)4 crystallizes in the triclinic P1 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 3-coordinate geometry to one S(3), one S(4), one O(1), one O(3), and one O(4) atom. The Sr(1)-S(3) bond length is 3.03 Å. The Sr(1)-S(4) bond length is 3.13 Å. The Sr(1)-O(1) bond length is 2.38 Å. The Sr(1)-O(3) bond length is 2.76 Å. The Sr(1)-O(4) bond length is 2.63 Å. In the second Sr site, Sr(2) is bonded in a 3-coordinate geometry to one S(3), one S(4), one O(1), one O(3), and one O(4) atom. The Sr(2)-S(3) bond length is 3.12 Å. The Sr(2)-S(4) bond length is 3.04 Å. The Sr(2)-O(1) bond length is 2.38 Å. The Sr(2)-O(3) bond length is 2.78 Å. The Sr(2)-O(4) bond length is 2.62 Å. In the third Sr site, Sr(3) is bonded in a 4-coordinate geometry to one Cu(2), two equivalent S(1), two equivalent S(2), one O(1), one O(2), one O(3), and one O(4) atom. The Sr(3)-Cu(2) bond length is 3.17 Å. There is one shorter (3.24 Å) and one longer (3.42 Å) Sr(3)-S(1) bond length. There is one shorter (3.25 Å) and one longer (3.36 Å) Sr(3)-S(2) bond length. The Sr(3)-O(1) bond length is 2.89 Å. The Sr(3)-O(2) bond length is 2.76 Å. The Sr(3)-O(3) bond length is 2.60 Å. The Sr(3)-O(4) bond length is 2.71 Å. In the fourth Sr site, Sr(4) is bonded in a 4-coordinate geometry to one Cu(2), two equivalent S(1), two equivalent S(2), one O(1), one O(2), one O(3), and one O(4) atom. The Sr(4)-Cu(2) bond length is 3.16 Å. There is one shorter (3.25 Å) and one longer (3.35 Å) Sr(4)-S(1) bond length. There is one shorter (3.24 Å) and one longer (3.42 Å) Sr(4)-S(2) bond length. The Sr(4)-O(1) bond length is 2.89 Å. The Sr(4)-O(2) bond length is 2.77 Å. The Sr(4)-O(3) bond length is 2.60 Å. The Sr(4)-O(4) bond length is 2.70 Å. Mg(1) is bonded in a distorted single-bond geometry to one Cu(2), one S(3), one S(4), and one O(2) atom. The Mg(1)-Cu(2) bond length is 2.65 Å. The Mg(1)-S(3) bond length is 2.48 Å. The Mg(1)-S(4) bond length is 2.48 Å. The Mg(1)-O(2) bond length is 1.92 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one S(2), one O(1), one O(2), one O(3), and one O(4) atom to form distorted MnSO4 square pyramids that share corners with four equivalent Mn(2)SO4 square pyramids and  a cornercorner with one Cu(1)S4 tetrahedra. The Mn(1)-S(2) bond length is 2.57 Å. The Mn(1)-O(1) bond length is 2.08 Å. The Mn(1)-O(2) bond length is 2.08 Å. The Mn(1)-O(3) bond length is 2.29 Å. The Mn(1)-O(4) bond length is 2.34 Å. In the second Mn site, Mn(2) is bonded to one S(1), one O(1), one O(2), one O(3), and one O(4) atom to form distorted MnSO4 square pyramids that share corners with four equivalent Mn(1)SO4 square pyramids and  a cornercorner with one Cu(1)S4 tetrahedra. The Mn(2)-S(1) bond length is 2.57 Å. The Mn(2)-O(1) bond length is 2.08 Å. The Mn(2)-O(2) bond length is 2.08 Å. The Mn(2)-O(3) bond length is 2.29 Å. The Mn(2)-O(4) bond length is 2.34 Å. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form distorted CuS4 tetrahedra that share  a cornercorner with one Mn(1)SO4 square pyramid and  a cornercorner with one Mn(2)SO4 square pyramid. The Cu(1)-S(1) bond length is 2.38 Å. The Cu(1)-S(2) bond length is 2.38 Å. The Cu(1)-S(3) bond length is 2.45 Å. The Cu(1)-S(4) bond length is 2.45 Å. In the second Cu site, Cu(2) is bonded in a 7-coordinate geometry to one Sr(3), one Sr(4), one Mg(1), one S(1), one S(2), one S(3), and one S(4) atom. The Cu(2)-S(1) bond length is 2.47 Å. The Cu(2)-S(2) bond length is 2.48 Å. The Cu(2)-S(3) bond length is 2.45 Å. The Cu(2)-S(4) bond length is 2.45 Å. In the third Cu site, Cu(3) is bonded in a 4-coordinate geometry to one S(1), one S(2), one S(3), and one S(4) atom. The Cu(3)-S(1) bond length is 2.71 Å. The Cu(3)-S(2) bond length is 2.71 Å. The Cu(3)-S(3) bond length is 2.35 Å. The Cu(3)-S(4) bond length is 2.35 Å. There are four inequivalent S sites. In the first S site, S(1) is bonded in a 8-coordinate geometry to two equivalent Sr(3), two equivalent Sr(4), one Mn(2), one Cu(1), one Cu(2), and one Cu(3) atom. In the second S site, S(2) is bonded in a 8-coordinate geometry to two equivalent Sr(3), two equivalent Sr(4), one Mn(1), one Cu(1), one Cu(2), and one Cu(3) atom. In the third S site, S(3) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Mg(1), one Cu(1), one Cu(2), and one Cu(3) atom. In the fourth S site, S(4) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Mg(1), one Cu(1), one Cu(2), and one Cu(3) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mn(1), and one Mn(2) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Sr(3), one Sr(4), one Mg(1), one Mn(1), and one Mn(2) atom. In the third O site, O(3) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mn(1), and one Mn(2) atom to form a mixture of distorted corner and edge-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles are 18°. In the fourth O site, O(4) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mn(1), and one Mn(2) atom to form a mixture of distorted corner and edge-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles are 18°.