SrPrGa3O7 crystallizes in the orthorhombic Cmm2 space group. Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(5), two equivalent O(3), two equivalent O(4), and two equivalent O(6) atoms. Pr(1) is bonded in a 8-coordinate geometry to one O(2), one O(6), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(2), one O(5), and two equivalent O(3) atoms to form distorted corner-sharing GaO4 tetrahedra. In the second Ga site, Ga(2) is bonded to one O(1), one O(6), and two equivalent O(4) atoms to form corner-sharing GaO4 tetrahedra. In the third Ga site, Ga(3) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form corner-sharing GaO4 tetrahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(1) and two equivalent Ga(2) atoms to form distorted OSr2Ga2 tetrahedra that share corners with two equivalent O(6)Sr2PrGa tetrahedra, corners with two equivalent O(5)SrPr2Ga tetrahedra, and edges with two equivalent O(6)Sr2PrGa tetrahedra. In the second O site, O(2) is bonded to two equivalent Pr(1) and two equivalent Ga(1) atoms to form distorted OPr2Ga2 tetrahedra that share corners with two equivalent O(6)Sr2PrGa tetrahedra, corners with two equivalent O(5)SrPr2Ga tetrahedra, and edges with two equivalent O(5)SrPr2Ga tetrahedra. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Sr(1), one Pr(1), one Ga(1), and one Ga(3) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Sr(1), one Pr(1), one Ga(2), and one Ga(3) atom. In the fifth O site, O(5) is bonded to one Sr(1), two equivalent Pr(1), and one Ga(1) atom to form OSrPr2Ga tetrahedra that share  a cornercorner with one O(2)Pr2Ga2 tetrahedra,  a cornercorner with one O(1)Sr2Ga2 tetrahedra, corners with four equivalent O(6)Sr2PrGa tetrahedra,  an edgeedge with one O(2)Pr2Ga2 tetrahedra, and  an edgeedge with one O(5)SrPr2Ga tetrahedra. In the sixth O site, O(6) is bonded to two equivalent Sr(1), one Pr(1), and one Ga(2) atom to form distorted OSr2PrGa tetrahedra that share  a cornercorner with one O(2)Pr2Ga2 tetrahedra,  a cornercorner with one O(1)Sr2Ga2 tetrahedra, corners with four equivalent O(5)SrPr2Ga tetrahedra,  an edgeedge with one O(1)Sr2Ga2 tetrahedra, and  an edgeedge with one O(6)Sr2PrGa tetrahedra.
SrPrGa3O7 crystallizes in the orthorhombic Cmm2 space group. Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(5), two equivalent O(3), two equivalent O(4), and two equivalent O(6) atoms. The Sr(1)-O(1) bond length is 2.54 Å. The Sr(1)-O(5) bond length is 2.63 Å. Both Sr(1)-O(3) bond lengths are 2.59 Å. Both Sr(1)-O(4) bond lengths are 2.99 Å. Both Sr(1)-O(6) bond lengths are 2.71 Å. Pr(1) is bonded in a 8-coordinate geometry to one O(2), one O(6), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. The Pr(1)-O(2) bond length is 2.48 Å. The Pr(1)-O(6) bond length is 2.42 Å. Both Pr(1)-O(3) bond lengths are 2.93 Å. Both Pr(1)-O(4) bond lengths are 2.48 Å. Both Pr(1)-O(5) bond lengths are 2.58 Å. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(2), one O(5), and two equivalent O(3) atoms to form distorted corner-sharing GaO4 tetrahedra. The Ga(1)-O(2) bond length is 1.88 Å. The Ga(1)-O(5) bond length is 1.82 Å. Both Ga(1)-O(3) bond lengths are 1.87 Å. In the second Ga site, Ga(2) is bonded to one O(1), one O(6), and two equivalent O(4) atoms to form corner-sharing GaO4 tetrahedra. The Ga(2)-O(1) bond length is 1.84 Å. The Ga(2)-O(6) bond length is 1.81 Å. Both Ga(2)-O(4) bond lengths are 1.89 Å. In the third Ga site, Ga(3) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form corner-sharing GaO4 tetrahedra. Both Ga(3)-O(3) bond lengths are 1.85 Å. Both Ga(3)-O(4) bond lengths are 1.87 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(1) and two equivalent Ga(2) atoms to form distorted OSr2Ga2 tetrahedra that share corners with two equivalent O(6)Sr2PrGa tetrahedra, corners with two equivalent O(5)SrPr2Ga tetrahedra, and edges with two equivalent O(6)Sr2PrGa tetrahedra. In the second O site, O(2) is bonded to two equivalent Pr(1) and two equivalent Ga(1) atoms to form distorted OPr2Ga2 tetrahedra that share corners with two equivalent O(6)Sr2PrGa tetrahedra, corners with two equivalent O(5)SrPr2Ga tetrahedra, and edges with two equivalent O(5)SrPr2Ga tetrahedra. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Sr(1), one Pr(1), one Ga(1), and one Ga(3) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Sr(1), one Pr(1), one Ga(2), and one Ga(3) atom. In the fifth O site, O(5) is bonded to one Sr(1), two equivalent Pr(1), and one Ga(1) atom to form OSrPr2Ga tetrahedra that share  a cornercorner with one O(2)Pr2Ga2 tetrahedra,  a cornercorner with one O(1)Sr2Ga2 tetrahedra, corners with four equivalent O(6)Sr2PrGa tetrahedra,  an edgeedge with one O(2)Pr2Ga2 tetrahedra, and  an edgeedge with one O(5)SrPr2Ga tetrahedra. In the sixth O site, O(6) is bonded to two equivalent Sr(1), one Pr(1), and one Ga(2) atom to form distorted OSr2PrGa tetrahedra that share  a cornercorner with one O(2)Pr2Ga2 tetrahedra,  a cornercorner with one O(1)Sr2Ga2 tetrahedra, corners with four equivalent O(5)SrPr2Ga tetrahedra,  an edgeedge with one O(1)Sr2Ga2 tetrahedra, and  an edgeedge with one O(6)Sr2PrGa tetrahedra.