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 7-coordinate geometry to one O(1), one O(10), one O(12), one O(2), 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(3), one O(4), one O(5), one O(6), and one O(9) atom. Mg(1) is bonded to one O(3), one O(4), one O(6), and one O(7) atom to form distorted MgO4 tetrahedra that share  a cornercorner with one Ru(1)O6 octahedra,  a cornercorner with one Ru(2)O6 octahedra, and  an edgeedge with one Ru(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 13-50°. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 7-coordinate geometry to one O(1), one O(10), 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 four equivalent Fe(2)O5 square pyramids and  a cornercorner with one Mg(1)O4 tetrahedra. 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  a cornercorner with one Fe(2)O5 square pyramid,  a cornercorner with one Mg(1)O4 tetrahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a trigonal planar geometry to one O(1), one O(10), and one O(11) atom. In the second Fe site, Fe(2) is bonded to one O(12), one O(2), one O(5), one O(8), and one O(9) atom to form distorted FeO5 square pyramids that share  a cornercorner with one Ru(2)O6 octahedra and corners with four equivalent Ru(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 21-40°. 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 in a distorted see-saw-like geometry to one Sr(1), one Pr(1), one Ru(2), and one Fe(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Sr(2), one Mg(1), one Pr(2), and one Ru(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Sr(2), one Mg(1), one Pr(2), and one Ru(2) atom. In the fifth O site, O(5) is bonded to one Sr(2), one Pr(1), one Pr(2), one Ru(1), and one Fe(2) atom to form distorted OSrPr2FeRu trigonal bipyramids that share edges with two equivalent O(12)Sr2PrFeRu square pyramids, edges with two equivalent O(8)SrPr2FeRu square pyramids, and  an edgeedge with one O(11)SrPrFeRu trigonal pyramid. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Sr(2), one Mg(1), one Pr(2), and one Ru(2) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Sr(1), one Mg(1), one Pr(1), and one Ru(2) atom. In the eighth O site, O(8) is bonded to one Sr(1), one Pr(1), one Pr(2), one Ru(1), and one Fe(2) atom to form distorted OSrPr2FeRu square pyramids that share corners with two equivalent O(12)Sr2PrFeRu square pyramids,  a cornercorner with one O(11)SrPrFeRu trigonal pyramid,  an edgeedge with one O(12)Sr2PrFeRu square pyramid, and edges with two equivalent O(5)SrPr2FeRu trigonal bipyramids. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), 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 to one Sr(2), one Pr(2), one Ru(2), and one Fe(1) atom to form distorted OSrPrFeRu trigonal pyramids that share  a cornercorner with one O(8)SrPr2FeRu square pyramid, corners with two equivalent O(12)Sr2PrFeRu square pyramids, and  an edgeedge with one O(5)SrPr2FeRu trigonal bipyramid. 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 square pyramids that share corners with two equivalent O(8)SrPr2FeRu square pyramids, corners with two equivalent O(11)SrPrFeRu trigonal pyramids,  an edgeedge with one O(8)SrPr2FeRu square pyramid, and edges with two equivalent O(5)SrPr2FeRu trigonal bipyramids.
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 7-coordinate geometry to one O(1), one O(10), one O(12), one O(2), one O(7), one O(8), and one O(9) atom. The Sr(1)-O(1) bond length is 2.50 Å. The Sr(1)-O(10) bond length is 2.60 Å. The Sr(1)-O(12) bond length is 2.68 Å. The Sr(1)-O(2) bond length is 2.46 Å. The Sr(1)-O(7) bond length is 2.67 Å. The Sr(1)-O(8) bond length is 2.59 Å. The Sr(1)-O(9) bond length is 2.60 Å. In the second Sr site, Sr(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(9) atom. The Sr(2)-O(11) bond length is 2.53 Å. The Sr(2)-O(12) bond length is 2.59 Å. The Sr(2)-O(3) bond length is 2.62 Å. The Sr(2)-O(4) bond length is 2.60 Å. The Sr(2)-O(5) bond length is 2.47 Å. The Sr(2)-O(6) bond length is 2.66 Å. The Sr(2)-O(9) bond length is 2.84 Å. Mg(1) is bonded to one O(3), one O(4), one O(6), and one O(7) atom to form distorted MgO4 tetrahedra that share  a cornercorner with one Ru(1)O6 octahedra,  a cornercorner with one Ru(2)O6 octahedra, and  an edgeedge with one Ru(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 13-50°. The Mg(1)-O(3) bond length is 1.94 Å. The Mg(1)-O(4) bond length is 2.06 Å. The Mg(1)-O(6) bond length is 1.93 Å. The Mg(1)-O(7) bond length is 1.95 Å. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 7-coordinate geometry to one O(1), one O(10), 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 2.43 Å. The Pr(1)-O(10) bond length is 2.51 Å. The Pr(1)-O(2) bond length is 2.47 Å. The Pr(1)-O(5) bond length is 2.66 Å. The Pr(1)-O(7) bond length is 2.47 Å. The Pr(1)-O(8) bond length is 2.52 Å. The Pr(1)-O(9) bond length is 2.41 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 2.54 Å. The Pr(2)-O(12) bond length is 2.44 Å. The Pr(2)-O(3) bond length is 2.39 Å. The Pr(2)-O(4) bond length is 2.39 Å. The Pr(2)-O(5) bond length is 2.48 Å. The Pr(2)-O(6) bond length is 2.63 Å. The Pr(2)-O(8) bond length is 2.57 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 four equivalent Fe(2)O5 square pyramids and  a cornercorner with one Mg(1)O4 tetrahedra. The Ru(1)-O(1) bond length is 2.08 Å. The Ru(1)-O(12) bond length is 2.14 Å. The Ru(1)-O(3) bond length is 2.05 Å. The Ru(1)-O(5) bond length is 2.04 Å. The Ru(1)-O(8) bond length is 2.14 Å. The Ru(1)-O(9) bond length is 2.01 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  a cornercorner with one Fe(2)O5 square pyramid,  a cornercorner with one Mg(1)O4 tetrahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. The Ru(2)-O(10) bond length is 2.03 Å. The Ru(2)-O(11) bond length is 2.09 Å. The Ru(2)-O(2) bond length is 2.02 Å. The Ru(2)-O(4) bond length is 2.07 Å. The Ru(2)-O(6) bond length is 1.98 Å. The Ru(2)-O(7) bond length is 2.05 Å. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a trigonal planar geometry to one O(1), one O(10), and one O(11) atom. The Fe(1)-O(1) bond length is 1.92 Å. The Fe(1)-O(10) bond length is 1.90 Å. The Fe(1)-O(11) bond length is 1.92 Å. In the second Fe site, Fe(2) is bonded to one O(12), one O(2), one O(5), one O(8), and one O(9) atom to form distorted FeO5 square pyramids that share  a cornercorner with one Ru(2)O6 octahedra and corners with four equivalent Ru(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 21-40°. The Fe(2)-O(12) bond length is 2.13 Å. The Fe(2)-O(2) bond length is 2.17 Å. The Fe(2)-O(5) bond length is 2.21 Å. The Fe(2)-O(8) bond length is 2.17 Å. The Fe(2)-O(9) bond length is 2.12 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 in a distorted see-saw-like geometry to one Sr(1), one Pr(1), one Ru(2), and one Fe(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Sr(2), one Mg(1), one Pr(2), and one Ru(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Sr(2), one Mg(1), one Pr(2), and one Ru(2) atom. In the fifth O site, O(5) is bonded to one Sr(2), one Pr(1), one Pr(2), one Ru(1), and one Fe(2) atom to form distorted OSrPr2FeRu trigonal bipyramids that share edges with two equivalent O(12)Sr2PrFeRu square pyramids, edges with two equivalent O(8)SrPr2FeRu square pyramids, and  an edgeedge with one O(11)SrPrFeRu trigonal pyramid. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Sr(2), one Mg(1), one Pr(2), and one Ru(2) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Sr(1), one Mg(1), one Pr(1), and one Ru(2) atom. In the eighth O site, O(8) is bonded to one Sr(1), one Pr(1), one Pr(2), one Ru(1), and one Fe(2) atom to form distorted OSrPr2FeRu square pyramids that share corners with two equivalent O(12)Sr2PrFeRu square pyramids,  a cornercorner with one O(11)SrPrFeRu trigonal pyramid,  an edgeedge with one O(12)Sr2PrFeRu square pyramid, and edges with two equivalent O(5)SrPr2FeRu trigonal bipyramids. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), 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 to one Sr(2), one Pr(2), one Ru(2), and one Fe(1) atom to form distorted OSrPrFeRu trigonal pyramids that share  a cornercorner with one O(8)SrPr2FeRu square pyramid, corners with two equivalent O(12)Sr2PrFeRu square pyramids, and  an edgeedge with one O(5)SrPr2FeRu trigonal bipyramid. 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 square pyramids that share corners with two equivalent O(8)SrPr2FeRu square pyramids, corners with two equivalent O(11)SrPrFeRu trigonal pyramids,  an edgeedge with one O(8)SrPr2FeRu square pyramid, and edges with two equivalent O(5)SrPr2FeRu trigonal bipyramids.