Sr4CaPr2Cu4HgO14 crystallizes in the tetragonal I-4m2 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(2), two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. Ca(1) is bonded in a body-centered cubic geometry to eight equivalent O(1) atoms. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a body-centered cubic geometry to eight equivalent O(1) atoms. In the second Pr site, Pr(2) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form PrO6 octahedra that share corners with four equivalent Pr(2)O6 octahedra and corners with two equivalent Cu(1)O5 square pyramids. The corner-sharing octahedra are not tilted. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(3) and four equivalent O(1) atoms to form CuO5 square pyramids that share  a cornercorner with one Pr(2)O6 octahedra and corners with four equivalent Cu(2)O5 square pyramids. The corner-sharing octahedra are not tilted. In the second Cu site, Cu(2) is bonded to one O(4) and four equivalent O(1) atoms to form corner-sharing CuO5 square pyramids. Hg(1) is bonded in a distorted linear geometry to two equivalent O(4) and four equivalent O(2) atoms. There are four inequivalent O sites. In the first O site, O(2) is bonded to one Sr(1), one Sr(2), two equivalent Pr(2), and two equivalent Hg(1) atoms to form distorted OSr2Pr2Hg2 octahedra that share corners with four equivalent O(2)Sr2Pr2Hg2 octahedra, corners with eight equivalent O(1)Sr2CaPrCu2 octahedra, edges with four equivalent O(2)Sr2Pr2Hg2 octahedra, edges with four equivalent O(4)Sr4CuHg octahedra, and edges with four equivalent O(3)Sr4PrCu octahedra. The corner-sharing octahedral tilt angles range from 0-44°. In the second O site, O(3) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Pr(2), and one Cu(1) atom to form distorted OSr4PrCu octahedra that share corners with five equivalent O(3)Sr4PrCu octahedra, corners with eight equivalent O(1)Sr2CaPrCu2 octahedra, edges with four equivalent O(2)Sr2Pr2Hg2 octahedra, edges with four equivalent O(4)Sr4CuHg octahedra, and faces with four equivalent O(1)Sr2CaPrCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the third O site, O(4) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Cu(2), and one Hg(1) atom to form distorted OSr4CuHg octahedra that share corners with five equivalent O(4)Sr4CuHg octahedra, corners with eight equivalent O(1)Sr2CaPrCu2 octahedra, edges with four equivalent O(2)Sr2Pr2Hg2 octahedra, edges with four equivalent O(3)Sr4PrCu octahedra, and faces with four equivalent O(1)Sr2CaPrCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the fourth O site, O(1) is bonded to one Sr(1), one Sr(2), one Ca(1), one Pr(1), one Cu(1), and one Cu(2) atom to form distorted OSr2CaPrCu2 octahedra that share corners with two equivalent O(2)Sr2Pr2Hg2 octahedra, corners with two equivalent O(4)Sr4CuHg octahedra, corners with two equivalent O(3)Sr4PrCu octahedra, corners with eight equivalent O(1)Sr2CaPrCu2 octahedra, edges with three equivalent O(1)Sr2CaPrCu2 octahedra,  a faceface with one O(4)Sr4CuHg octahedra,  a faceface with one O(3)Sr4PrCu octahedra, and faces with four equivalent O(1)Sr2CaPrCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-66°.
Sr4CaPr2Cu4HgO14 crystallizes in the tetragonal I-4m2 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(2), two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. The Sr(1)-O(2) bond length is 2.62 Å. Both Sr(1)-O(3) bond lengths are 2.72 Å. Both Sr(1)-O(4) bond lengths are 2.73 Å. All Sr(1)-O(1) bond lengths are 2.78 Å. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. The Sr(2)-O(2) bond length is 2.65 Å. Both Sr(2)-O(3) bond lengths are 2.72 Å. Both Sr(2)-O(4) bond lengths are 2.74 Å. All Sr(2)-O(1) bond lengths are 2.75 Å. Ca(1) is bonded in a body-centered cubic geometry to eight equivalent O(1) atoms. All Ca(1)-O(1) bond lengths are 2.48 Å. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a body-centered cubic geometry to eight equivalent O(1) atoms. All Pr(1)-O(1) bond lengths are 2.48 Å. In the second Pr site, Pr(2) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form PrO6 octahedra that share corners with four equivalent Pr(2)O6 octahedra and corners with two equivalent Cu(1)O5 square pyramids. The corner-sharing octahedra are not tilted. Both Pr(2)-O(3) bond lengths are 2.26 Å. All Pr(2)-O(2) bond lengths are 2.69 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(3) and four equivalent O(1) atoms to form CuO5 square pyramids that share  a cornercorner with one Pr(2)O6 octahedra and corners with four equivalent Cu(2)O5 square pyramids. The corner-sharing octahedra are not tilted. The Cu(1)-O(3) bond length is 2.15 Å. All Cu(1)-O(1) bond lengths are 1.93 Å. In the second Cu site, Cu(2) is bonded to one O(4) and four equivalent O(1) atoms to form corner-sharing CuO5 square pyramids. The Cu(2)-O(4) bond length is 2.30 Å. All Cu(2)-O(1) bond lengths are 1.90 Å. Hg(1) is bonded in a distorted linear geometry to two equivalent O(4) and four equivalent O(2) atoms. Both Hg(1)-O(4) bond lengths are 2.15 Å. All Hg(1)-O(2) bond lengths are 2.69 Å. There are four inequivalent O sites. In the first O site, O(2) is bonded to one Sr(1), one Sr(2), two equivalent Pr(2), and two equivalent Hg(1) atoms to form distorted OSr2Pr2Hg2 octahedra that share corners with four equivalent O(2)Sr2Pr2Hg2 octahedra, corners with eight equivalent O(1)Sr2CaPrCu2 octahedra, edges with four equivalent O(2)Sr2Pr2Hg2 octahedra, edges with four equivalent O(4)Sr4CuHg octahedra, and edges with four equivalent O(3)Sr4PrCu octahedra. The corner-sharing octahedral tilt angles range from 0-44°. In the second O site, O(3) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Pr(2), and one Cu(1) atom to form distorted OSr4PrCu octahedra that share corners with five equivalent O(3)Sr4PrCu octahedra, corners with eight equivalent O(1)Sr2CaPrCu2 octahedra, edges with four equivalent O(2)Sr2Pr2Hg2 octahedra, edges with four equivalent O(4)Sr4CuHg octahedra, and faces with four equivalent O(1)Sr2CaPrCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the third O site, O(4) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Cu(2), and one Hg(1) atom to form distorted OSr4CuHg octahedra that share corners with five equivalent O(4)Sr4CuHg octahedra, corners with eight equivalent O(1)Sr2CaPrCu2 octahedra, edges with four equivalent O(2)Sr2Pr2Hg2 octahedra, edges with four equivalent O(3)Sr4PrCu octahedra, and faces with four equivalent O(1)Sr2CaPrCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the fourth O site, O(1) is bonded to one Sr(1), one Sr(2), one Ca(1), one Pr(1), one Cu(1), and one Cu(2) atom to form distorted OSr2CaPrCu2 octahedra that share corners with two equivalent O(2)Sr2Pr2Hg2 octahedra, corners with two equivalent O(4)Sr4CuHg octahedra, corners with two equivalent O(3)Sr4PrCu octahedra, corners with eight equivalent O(1)Sr2CaPrCu2 octahedra, edges with three equivalent O(1)Sr2CaPrCu2 octahedra,  a faceface with one O(4)Sr4CuHg octahedra,  a faceface with one O(3)Sr4PrCu octahedra, and faces with four equivalent O(1)Sr2CaPrCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-66°.