Sr2MgPr2Fe2(RuO6)2 crystallizes in the triclinic P1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(12), one O(2), one O(6), one O(7), one O(8), and one O(9) atom. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one O(11), one O(12), one O(4), one O(5), one O(6), one O(7), and two equivalent O(3) atoms. Mg(1) is bonded in a distorted rectangular see-saw-like geometry to one O(3), one O(4), one O(5), and one O(8) atom. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(11), one O(2), one O(5), one O(7), one O(8), and one O(9) atom. In the second Pr site, Pr(2) is bonded in a 7-coordinate geometry to one O(11), one O(12), one O(3), one O(4), one O(5), one O(6), and one O(8) atom. There are two inequivalent Ru sites. In the first Ru site, Ru(1) is bonded to one O(1), one O(12), one O(3), one O(5), one O(8), and one O(9) atom to form RuO6 octahedra that share corners with two equivalent Fe(1)O5 trigonal bipyramids. In the second Ru site, Ru(2) is bonded to one O(10), one O(11), one O(2), one O(4), one O(6), and one O(7) atom to form RuO6 octahedra that share corners with three equivalent Fe(1)O5 trigonal bipyramids. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(10), one O(3), one O(6), and one O(7) atom to form FeO5 trigonal bipyramids that share corners with two equivalent Ru(1)O6 octahedra and corners with three equivalent Ru(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 26-40°. In the second Fe site, Fe(2) is bonded in a 5-coordinate geometry to one O(12), one O(2), one O(4), one O(8), and one O(9) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Sr(1), one Pr(1), one Ru(1), and one Fe(1) atom. In the second O site, O(2) is bonded to one Sr(1), one Pr(1), one Ru(2), and one Fe(2) atom to form a mixture of distorted corner and edge-sharing OSrPrFeRu tetrahedra. In the third O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Sr(2), one Mg(1), one Pr(2), one Ru(1), and one Fe(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Sr(2), one Mg(1), one Pr(2), one Ru(2), and one Fe(2) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Sr(2), one Mg(1), one Pr(1), one Pr(2), and one Ru(1) atom. In the sixth O site, O(6) is bonded to one Sr(1), one Sr(2), one Pr(2), one Ru(2), and one Fe(1) atom to form distorted OSr2PrFeRu trigonal bipyramids that share  a cornercorner with one O(12)Sr2PrFeRu trigonal bipyramid,  an edgeedge with one O(2)SrPrFeRu tetrahedra,  an edgeedge with one O(12)Sr2PrFeRu trigonal bipyramid, and edges with two equivalent O(7)Sr2PrFeRu trigonal bipyramids. In the seventh O site, O(7) is bonded to one Sr(1), one Sr(2), one Pr(1), one Ru(2), and one Fe(1) atom to form distorted OSr2PrFeRu trigonal bipyramids that share corners with three equivalent O(2)SrPrFeRu tetrahedra, corners with two equivalent O(12)Sr2PrFeRu trigonal bipyramids, and edges with two equivalent O(6)Sr2PrFeRu trigonal bipyramids. In the eighth O site, O(8) is bonded in a 6-coordinate geometry to one Sr(1), one Mg(1), one Pr(1), one Pr(2), one Ru(1), and one Fe(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Sr(1), one Pr(1), one Ru(1), and one Fe(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Sr(1), one Pr(1), one Ru(2), and one Fe(1) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Sr(2), one Pr(1), one Pr(2), and one Ru(2) atom. In the twelfth O site, O(12) is bonded to one Sr(1), one Sr(2), one Pr(2), one Ru(1), and one Fe(2) atom to form distorted OSr2PrFeRu trigonal bipyramids that share  a cornercorner with one O(6)Sr2PrFeRu trigonal bipyramid, corners with two equivalent O(7)Sr2PrFeRu trigonal bipyramids,  an edgeedge with one O(2)SrPrFeRu tetrahedra, and  an edgeedge with one O(6)Sr2PrFeRu trigonal bipyramid.
Sr2MgPr2Fe2(RuO6)2 crystallizes in the triclinic P1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(12), one O(2), one O(6), one O(7), one O(8), and one O(9) atom. The Sr(1)-O(1) bond length is 2.74 Å. The Sr(1)-O(10) bond length is 2.53 Å. The Sr(1)-O(12) bond length is 2.74 Å. The Sr(1)-O(2) bond length is 2.46 Å. The Sr(1)-O(6) bond length is 2.72 Å. The Sr(1)-O(7) bond length is 2.63 Å. The Sr(1)-O(8) bond length is 2.62 Å. The Sr(1)-O(9) bond length is 2.76 Å. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one O(11), one O(12), one O(4), one O(5), one O(6), one O(7), and two equivalent O(3) atoms. The Sr(2)-O(11) bond length is 2.46 Å. The Sr(2)-O(12) bond length is 2.53 Å. The Sr(2)-O(4) bond length is 2.50 Å. The Sr(2)-O(5) bond length is 2.64 Å. The Sr(2)-O(6) bond length is 2.36 Å. The Sr(2)-O(7) bond length is 2.55 Å. There is one shorter (2.86 Å) and one longer (3.15 Å) Sr(2)-O(3) bond length. Mg(1) is bonded in a distorted rectangular see-saw-like geometry to one O(3), one O(4), one O(5), and one O(8) atom. The Mg(1)-O(3) bond length is 1.98 Å. The Mg(1)-O(4) bond length is 1.96 Å. The Mg(1)-O(5) bond length is 1.94 Å. The Mg(1)-O(8) bond length is 1.97 Å. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(11), one O(2), one O(5), one O(7), one O(8), and one O(9) atom. The Pr(1)-O(1) bond length is 2.42 Å. The Pr(1)-O(10) bond length is 2.65 Å. The Pr(1)-O(11) bond length is 2.63 Å. The Pr(1)-O(2) bond length is 2.43 Å. The Pr(1)-O(5) bond length is 2.71 Å. The Pr(1)-O(7) bond length is 2.48 Å. The Pr(1)-O(8) bond length is 2.73 Å. The Pr(1)-O(9) bond length is 2.46 Å. In the second Pr site, Pr(2) is bonded in a 7-coordinate geometry to one O(11), one O(12), one O(3), one O(4), one O(5), one O(6), and one O(8) atom. The Pr(2)-O(11) bond length is 2.43 Å. The Pr(2)-O(12) bond length is 2.49 Å. The Pr(2)-O(3) bond length is 2.60 Å. The Pr(2)-O(4) bond length is 2.53 Å. The Pr(2)-O(5) bond length is 2.50 Å. The Pr(2)-O(6) bond length is 2.38 Å. The Pr(2)-O(8) bond length is 2.74 Å. There are two inequivalent Ru sites. In the first Ru site, Ru(1) is bonded to one O(1), one O(12), one O(3), one O(5), one O(8), and one O(9) atom to form RuO6 octahedra that share corners with two equivalent Fe(1)O5 trigonal bipyramids. The Ru(1)-O(1) bond length is 2.03 Å. The Ru(1)-O(12) bond length is 2.08 Å. The Ru(1)-O(3) bond length is 2.14 Å. The Ru(1)-O(5) bond length is 2.13 Å. The Ru(1)-O(8) bond length is 2.17 Å. The Ru(1)-O(9) bond length is 2.12 Å. In the second Ru site, Ru(2) is bonded to one O(10), one O(11), one O(2), one O(4), one O(6), and one O(7) atom to form RuO6 octahedra that share corners with three equivalent Fe(1)O5 trigonal bipyramids. The Ru(2)-O(10) bond length is 2.05 Å. The Ru(2)-O(11) bond length is 2.02 Å. The Ru(2)-O(2) bond length is 2.02 Å. The Ru(2)-O(4) bond length is 2.17 Å. The Ru(2)-O(6) bond length is 2.16 Å. The Ru(2)-O(7) bond length is 2.19 Å. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(10), one O(3), one O(6), and one O(7) atom to form FeO5 trigonal bipyramids that share corners with two equivalent Ru(1)O6 octahedra and corners with three equivalent Ru(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 26-40°. The Fe(1)-O(1) bond length is 2.02 Å. The Fe(1)-O(10) bond length is 1.97 Å. The Fe(1)-O(3) bond length is 2.07 Å. The Fe(1)-O(6) bond length is 2.07 Å. The Fe(1)-O(7) bond length is 2.00 Å. In the second Fe site, Fe(2) is bonded in a 5-coordinate geometry to one O(12), one O(2), one O(4), one O(8), and one O(9) atom. The Fe(2)-O(12) bond length is 2.00 Å. The Fe(2)-O(2) bond length is 1.93 Å. The Fe(2)-O(4) bond length is 2.19 Å. The Fe(2)-O(8) bond length is 2.18 Å. The Fe(2)-O(9) bond length is 1.91 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Sr(1), one Pr(1), one Ru(1), and one Fe(1) atom. In the second O site, O(2) is bonded to one Sr(1), one Pr(1), one Ru(2), and one Fe(2) atom to form a mixture of distorted corner and edge-sharing OSrPrFeRu tetrahedra. In the third O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Sr(2), one Mg(1), one Pr(2), one Ru(1), and one Fe(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Sr(2), one Mg(1), one Pr(2), one Ru(2), and one Fe(2) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Sr(2), one Mg(1), one Pr(1), one Pr(2), and one Ru(1) atom. In the sixth O site, O(6) is bonded to one Sr(1), one Sr(2), one Pr(2), one Ru(2), and one Fe(1) atom to form distorted OSr2PrFeRu trigonal bipyramids that share  a cornercorner with one O(12)Sr2PrFeRu trigonal bipyramid,  an edgeedge with one O(2)SrPrFeRu tetrahedra,  an edgeedge with one O(12)Sr2PrFeRu trigonal bipyramid, and edges with two equivalent O(7)Sr2PrFeRu trigonal bipyramids. In the seventh O site, O(7) is bonded to one Sr(1), one Sr(2), one Pr(1), one Ru(2), and one Fe(1) atom to form distorted OSr2PrFeRu trigonal bipyramids that share corners with three equivalent O(2)SrPrFeRu tetrahedra, corners with two equivalent O(12)Sr2PrFeRu trigonal bipyramids, and edges with two equivalent O(6)Sr2PrFeRu trigonal bipyramids. In the eighth O site, O(8) is bonded in a 6-coordinate geometry to one Sr(1), one Mg(1), one Pr(1), one Pr(2), one Ru(1), and one Fe(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Sr(1), one Pr(1), one Ru(1), and one Fe(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Sr(1), one Pr(1), one Ru(2), and one Fe(1) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Sr(2), one Pr(1), one Pr(2), and one Ru(2) atom. In the twelfth O site, O(12) is bonded to one Sr(1), one Sr(2), one Pr(2), one Ru(1), and one Fe(2) atom to form distorted OSr2PrFeRu trigonal bipyramids that share  a cornercorner with one O(6)Sr2PrFeRu trigonal bipyramid, corners with two equivalent O(7)Sr2PrFeRu trigonal bipyramids,  an edgeedge with one O(2)SrPrFeRu tetrahedra, and  an edgeedge with one O(6)Sr2PrFeRu trigonal bipyramid.