SrPrCuGaO5 crystallizes in the triclinic P1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(1), one O(5), one O(6), one O(7), one O(8), two equivalent O(4), and two equivalent O(9) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(1), one O(3), one O(5), one O(6), one O(7), two equivalent O(4), and two equivalent O(9) atoms. 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(5), one O(6), one O(7), one O(8), and two equivalent O(2) atoms. In the second Pr site, Pr(2) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(5), one O(6), and one O(7) atom. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(4), one O(5), one O(6), and one O(7) atom. In the second Cu site, Cu(2) is bonded to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(9) atom to form distorted CuO6 octahedra that share  a cornercorner with one Ga(1)O4 tetrahedra and  a cornercorner with one Ga(2)O4 tetrahedra. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(2), one O(3), one O(4), and one O(8) atom to form GaO4 tetrahedra that share  a cornercorner with one Cu(2)O6 octahedra and corners with two equivalent Ga(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 40°. In the second Ga site, Ga(2) is bonded to one O(10), one O(3), one O(8), and one O(9) atom to form GaO4 tetrahedra that share  a cornercorner with one Cu(2)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 29°. There are ten 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 Pr(1), one Pr(2), one Cu(1), and one Cu(2) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Pr(2), two equivalent Pr(1), one Cu(2), and one Ga(1) atom. In the third O site, O(3) is bonded to one Sr(2), one Pr(2), one Ga(1), and one Ga(2) atom to form distorted OSrPrGa2 tetrahedra that share corners with two equivalent O(6)Sr2Pr2Cu2 octahedra, corners with two equivalent O(7)Sr2Pr2Cu2 octahedra, and corners with two equivalent O(8)SrPrGa2 tetrahedra. The corner-sharing octahedral tilt angles range from 24-68°. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one Cu(1), and one Ga(1) atom. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Pr(1), one Pr(2), one Cu(1), and one Cu(2) atom. In the sixth O site, O(6) is bonded to one Sr(1), one Sr(2), one Pr(1), one Pr(2), one Cu(1), and one Cu(2) atom to form distorted OSr2Pr2Cu2 octahedra that share corners with two equivalent O(3)SrPrGa2 tetrahedra, corners with two equivalent O(8)SrPrGa2 tetrahedra, and faces with two equivalent O(7)Sr2Pr2Cu2 octahedra. In the seventh O site, O(7) is bonded to one Sr(1), one Sr(2), one Pr(1), one Pr(2), one Cu(1), and one Cu(2) atom to form distorted OSr2Pr2Cu2 octahedra that share corners with two equivalent O(3)SrPrGa2 tetrahedra, corners with two equivalent O(8)SrPrGa2 tetrahedra, and faces with two equivalent O(6)Sr2Pr2Cu2 octahedra. In the eighth O site, O(8) is bonded to one Sr(1), one Pr(1), one Ga(1), and one Ga(2) atom to form distorted OSrPrGa2 tetrahedra that share corners with two equivalent O(6)Sr2Pr2Cu2 octahedra, corners with two equivalent O(7)Sr2Pr2Cu2 octahedra, and corners with two equivalent O(3)SrPrGa2 tetrahedra. The corner-sharing octahedral tilt angles range from 25-68°. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one Cu(2), and one Ga(2) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Pr(1), one Pr(2), one Cu(1), and one Ga(2) atom.
SrPrCuGaO5 crystallizes in the triclinic P1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(1), one O(5), one O(6), one O(7), one O(8), two equivalent O(4), and two equivalent O(9) atoms. The Sr(1)-O(1) bond length is 2.79 Å. The Sr(1)-O(5) bond length is 2.83 Å. The Sr(1)-O(6) bond length is 2.72 Å. The Sr(1)-O(7) bond length is 2.78 Å. The Sr(1)-O(8) bond length is 2.62 Å. There is one shorter (2.64 Å) and one longer (2.90 Å) Sr(1)-O(4) bond length. There is one shorter (2.54 Å) and one longer (3.22 Å) Sr(1)-O(9) bond length. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(1), one O(3), one O(5), one O(6), one O(7), two equivalent O(4), and two equivalent O(9) atoms. The Sr(2)-O(1) bond length is 2.82 Å. The Sr(2)-O(3) bond length is 2.64 Å. The Sr(2)-O(5) bond length is 2.83 Å. The Sr(2)-O(6) bond length is 2.79 Å. The Sr(2)-O(7) bond length is 2.70 Å. There is one shorter (2.53 Å) and one longer (3.23 Å) Sr(2)-O(4) bond length. There is one shorter (2.66 Å) and one longer (2.85 Å) Sr(2)-O(9) bond length. 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(5), one O(6), one O(7), one O(8), and two equivalent O(2) atoms. The Pr(1)-O(1) bond length is 2.51 Å. The Pr(1)-O(10) bond length is 2.42 Å. The Pr(1)-O(5) bond length is 2.49 Å. The Pr(1)-O(6) bond length is 2.53 Å. The Pr(1)-O(7) bond length is 2.49 Å. The Pr(1)-O(8) bond length is 2.51 Å. There is one shorter (2.54 Å) and one longer (3.09 Å) Pr(1)-O(2) bond length. In the second Pr site, Pr(2) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(5), one O(6), and one O(7) atom. The Pr(2)-O(1) bond length is 2.51 Å. The Pr(2)-O(10) bond length is 2.51 Å. The Pr(2)-O(2) bond length is 2.43 Å. The Pr(2)-O(3) bond length is 2.49 Å. The Pr(2)-O(5) bond length is 2.49 Å. The Pr(2)-O(6) bond length is 2.49 Å. The Pr(2)-O(7) bond length is 2.55 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(4), one O(5), one O(6), and one O(7) atom. The Cu(1)-O(1) bond length is 1.95 Å. The Cu(1)-O(10) bond length is 2.64 Å. The Cu(1)-O(4) bond length is 2.48 Å. The Cu(1)-O(5) bond length is 1.95 Å. The Cu(1)-O(6) bond length is 1.94 Å. The Cu(1)-O(7) bond length is 1.96 Å. In the second Cu site, Cu(2) is bonded to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(9) atom to form distorted CuO6 octahedra that share  a cornercorner with one Ga(1)O4 tetrahedra and  a cornercorner with one Ga(2)O4 tetrahedra. The Cu(2)-O(1) bond length is 1.96 Å. The Cu(2)-O(2) bond length is 2.58 Å. The Cu(2)-O(5) bond length is 1.95 Å. The Cu(2)-O(6) bond length is 1.96 Å. The Cu(2)-O(7) bond length is 1.95 Å. The Cu(2)-O(9) bond length is 2.46 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(2), one O(3), one O(4), and one O(8) atom to form GaO4 tetrahedra that share  a cornercorner with one Cu(2)O6 octahedra and corners with two equivalent Ga(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 40°. The Ga(1)-O(2) bond length is 1.84 Å. The Ga(1)-O(3) bond length is 1.93 Å. The Ga(1)-O(4) bond length is 1.83 Å. The Ga(1)-O(8) bond length is 1.94 Å. In the second Ga site, Ga(2) is bonded to one O(10), one O(3), one O(8), and one O(9) atom to form GaO4 tetrahedra that share  a cornercorner with one Cu(2)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 29°. The Ga(2)-O(10) bond length is 1.84 Å. The Ga(2)-O(3) bond length is 1.94 Å. The Ga(2)-O(8) bond length is 1.93 Å. The Ga(2)-O(9) bond length is 1.82 Å. There are ten 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 Pr(1), one Pr(2), one Cu(1), and one Cu(2) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Pr(2), two equivalent Pr(1), one Cu(2), and one Ga(1) atom. In the third O site, O(3) is bonded to one Sr(2), one Pr(2), one Ga(1), and one Ga(2) atom to form distorted OSrPrGa2 tetrahedra that share corners with two equivalent O(6)Sr2Pr2Cu2 octahedra, corners with two equivalent O(7)Sr2Pr2Cu2 octahedra, and corners with two equivalent O(8)SrPrGa2 tetrahedra. The corner-sharing octahedral tilt angles range from 24-68°. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one Cu(1), and one Ga(1) atom. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Pr(1), one Pr(2), one Cu(1), and one Cu(2) atom. In the sixth O site, O(6) is bonded to one Sr(1), one Sr(2), one Pr(1), one Pr(2), one Cu(1), and one Cu(2) atom to form distorted OSr2Pr2Cu2 octahedra that share corners with two equivalent O(3)SrPrGa2 tetrahedra, corners with two equivalent O(8)SrPrGa2 tetrahedra, and faces with two equivalent O(7)Sr2Pr2Cu2 octahedra. In the seventh O site, O(7) is bonded to one Sr(1), one Sr(2), one Pr(1), one Pr(2), one Cu(1), and one Cu(2) atom to form distorted OSr2Pr2Cu2 octahedra that share corners with two equivalent O(3)SrPrGa2 tetrahedra, corners with two equivalent O(8)SrPrGa2 tetrahedra, and faces with two equivalent O(6)Sr2Pr2Cu2 octahedra. In the eighth O site, O(8) is bonded to one Sr(1), one Pr(1), one Ga(1), and one Ga(2) atom to form distorted OSrPrGa2 tetrahedra that share corners with two equivalent O(6)Sr2Pr2Cu2 octahedra, corners with two equivalent O(7)Sr2Pr2Cu2 octahedra, and corners with two equivalent O(3)SrPrGa2 tetrahedra. The corner-sharing octahedral tilt angles range from 25-68°. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one Cu(2), and one Ga(2) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Pr(1), one Pr(2), one Cu(1), and one Ga(2) atom.