La4Sr3O9 crystallizes in the monoclinic Cc space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(7), one O(8), and one O(9) atom. In the second Sr site, Sr(2) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted SrO7 pentagonal bipyramids that share corners with three equivalent Sr(3)O7 pentagonal bipyramids,  a cornercorner with one La(1)O6 pentagonal pyramid,  an edgeedge with one Sr(3)O7 pentagonal bipyramid, edges with two equivalent La(1)O6 pentagonal pyramids, and edges with two equivalent La(4)O6 pentagonal pyramids. In the third Sr site, Sr(3) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), one O(8), and one O(9) atom to form distorted SrO7 pentagonal bipyramids that share corners with three equivalent Sr(2)O7 pentagonal bipyramids, corners with two equivalent La(1)O6 pentagonal pyramids,  an edgeedge with one Sr(2)O7 pentagonal bipyramid,  an edgeedge with one La(1)O6 pentagonal pyramid, and edges with two equivalent La(4)O6 pentagonal pyramids. There are four inequivalent La sites. In the first La site, La(1) is bonded to one O(1), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted LaO6 pentagonal pyramids that share  a cornercorner with one Sr(2)O7 pentagonal bipyramid, corners with two equivalent Sr(3)O7 pentagonal bipyramids,  a cornercorner with one La(4)O6 pentagonal pyramid,  an edgeedge with one Sr(3)O7 pentagonal bipyramid, edges with two equivalent Sr(2)O7 pentagonal bipyramids, and edges with two equivalent La(4)O6 pentagonal pyramids. In the second La site, La(2) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(6), one O(8), and one O(9) atom. In the third La site, La(3) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(9) atom. In the fourth La site, La(4) is bonded to one O(1), one O(4), one O(5), one O(6), one O(7), and one O(9) atom to form distorted LaO6 pentagonal pyramids that share  a cornercorner with one La(1)O6 pentagonal pyramid, edges with two equivalent Sr(2)O7 pentagonal bipyramids, edges with two equivalent Sr(3)O7 pentagonal bipyramids, and edges with two equivalent La(1)O6 pentagonal pyramids. There are nine inequivalent O sites. In the first O site, O(5) is bonded to one Sr(1), one Sr(2), one Sr(3), one La(1), one La(3), and one La(4) atom to form OSr3La3 octahedra that share corners with two equivalent O(6)Sr2La4 octahedra, corners with two equivalent O(4)Sr2La3 trigonal bipyramids, corners with two equivalent O(7)Sr2La3 trigonal bipyramids, corners with two equivalent O(9)Sr2La3 trigonal bipyramids, corners with two equivalent O(2)Sr3La2 trigonal bipyramids, corners with two equivalent O(8)Sr3La2 trigonal bipyramids, corners with two equivalent O(1)SrLa4 trigonal bipyramids,  a cornercorner with one O(3)Sr3La trigonal pyramid,  an edgeedge with one O(4)Sr2La3 trigonal bipyramid,  an edgeedge with one O(9)Sr2La3 trigonal bipyramid,  an edgeedge with one O(2)Sr3La2 trigonal bipyramid,  an edgeedge with one O(8)Sr3La2 trigonal bipyramid,  an edgeedge with one O(1)SrLa4 trigonal bipyramid,  an edgeedge with one O(3)Sr3La trigonal pyramid,  a faceface with one O(6)Sr2La4 octahedra, and  a faceface with one O(7)Sr2La3 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 34-35°. In the second O site, O(6) is bonded to one Sr(2), one Sr(3), one La(1), one La(2), one La(3), and one La(4) atom to form OSr2La4 octahedra that share corners with two equivalent O(5)Sr3La3 octahedra, corners with two equivalent O(4)Sr2La3 trigonal bipyramids, corners with two equivalent O(7)Sr2La3 trigonal bipyramids, corners with two equivalent O(9)Sr2La3 trigonal bipyramids, corners with two equivalent O(2)Sr3La2 trigonal bipyramids, corners with two equivalent O(8)Sr3La2 trigonal bipyramids, corners with two equivalent O(1)SrLa4 trigonal bipyramids,  a cornercorner with one O(3)Sr3La trigonal pyramid,  an edgeedge with one O(4)Sr2La3 trigonal bipyramid,  an edgeedge with one O(7)Sr2La3 trigonal bipyramid,  an edgeedge with one O(9)Sr2La3 trigonal bipyramid,  an edgeedge with one O(2)Sr3La2 trigonal bipyramid,  an edgeedge with one O(8)Sr3La2 trigonal bipyramid,  an edgeedge with one O(3)Sr3La trigonal pyramid,  a faceface with one O(5)Sr3La3 octahedra, and  a faceface with one O(1)SrLa4 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 34-35°. In the third O site, O(7) is bonded to one Sr(1), one Sr(2), one La(1), one La(3), and one La(4) atom to form distorted OSr2La3 trigonal bipyramids that share corners with two equivalent O(6)Sr2La4 octahedra, corners with two equivalent O(5)Sr3La3 octahedra,  a cornercorner with one O(9)Sr2La3 trigonal bipyramid,  a cornercorner with one O(2)Sr3La2 trigonal bipyramid,  a cornercorner with one O(8)Sr3La2 trigonal bipyramid, corners with two equivalent O(4)Sr2La3 trigonal bipyramids, corners with three equivalent O(1)SrLa4 trigonal bipyramids, corners with two equivalent O(3)Sr3La trigonal pyramids,  an edgeedge with one O(6)Sr2La4 octahedra,  an edgeedge with one O(4)Sr2La3 trigonal bipyramid,  an edgeedge with one O(9)Sr2La3 trigonal bipyramid,  an edgeedge with one O(2)Sr3La2 trigonal bipyramid,  an edgeedge with one O(8)Sr3La2 trigonal bipyramid, and  a faceface with one O(5)Sr3La3 octahedra. The corner-sharing octahedral tilt angles range from 29-47°. In the fourth O site, O(8) is bonded to one Sr(1), one Sr(2), one Sr(3), one La(1), and one La(2) atom to form distorted OSr3La2 trigonal bipyramids that share corners with two equivalent O(6)Sr2La4 octahedra, corners with two equivalent O(5)Sr3La3 octahedra,  a cornercorner with one O(7)Sr2La3 trigonal bipyramid,  a cornercorner with one O(9)Sr2La3 trigonal bipyramid,  a cornercorner with one O(1)SrLa4 trigonal bipyramid, corners with two equivalent O(4)Sr2La3 trigonal bipyramids, corners with two equivalent O(3)Sr3La trigonal pyramids,  an edgeedge with one O(6)Sr2La4 octahedra,  an edgeedge with one O(5)Sr3La3 octahedra,  an edgeedge with one O(4)Sr2La3 trigonal bipyramid,  an edgeedge with one O(7)Sr2La3 trigonal bipyramid,  an edgeedge with one O(9)Sr2La3 trigonal bipyramid,  an edgeedge with one O(1)SrLa4 trigonal bipyramid, edges with two equivalent O(2)Sr3La2 trigonal bipyramids, and  an edgeedge with one O(3)Sr3La trigonal pyramid. The corner-sharing octahedral tilt angles range from 42-65°. In the fifth O site, O(9) is bonded to one Sr(1), one Sr(3), one La(2), one La(3), and one La(4) atom to form OSr2La3 trigonal bipyramids that share corners with two equivalent O(6)Sr2La4 octahedra, corners with two equivalent O(5)Sr3La3 octahedra,  a cornercorner with one O(4)Sr2La3 trigonal bipyramid,  a cornercorner with one O(7)Sr2La3 trigonal bipyramid,  a cornercorner with one O(8)Sr3La2 trigonal bipyramid, corners with two equivalent O(2)Sr3La2 trigonal bipyramids, corners with two equivalent O(1)SrLa4 trigonal bipyramids,  a cornercorner with one O(3)Sr3La trigonal pyramid,  an edgeedge with one O(6)Sr2La4 octahedra,  an edgeedge with one O(5)Sr3La3 octahedra,  an edgeedge with one O(4)Sr2La3 trigonal bipyramid,  an edgeedge with one O(7)Sr2La3 trigonal bipyramid,  an edgeedge with one O(2)Sr3La2 trigonal bipyramid,  an edgeedge with one O(8)Sr3La2 trigonal bipyramid,  an edgeedge with one O(1)SrLa4 trigonal bipyramid, and  an edgeedge with one O(3)Sr3La trigonal pyramid. The corner-sharing octahedral tilt angles range from 34-67°. In the sixth O site, O(1) is bonded to one Sr(3), one La(1), one La(2), one La(3), and one La(4) atom to form distorted OSrLa4 trigonal bipyramids that share corners with two equivalent O(6)Sr2La4 octahedra, corners with two equivalent O(5)Sr3La3 octahedra,  a cornercorner with one O(4)Sr2La3 trigonal bipyramid,  a cornercorner with one O(2)Sr3La2 trigonal bipyramid,  a cornercorner with one O(8)Sr3La2 trigonal bipyramid, corners with two equivalent O(9)Sr2La3 trigonal bipyramids, corners with three equivalent O(7)Sr2La3 trigonal bipyramids, corners with two equivalent O(3)Sr3La trigonal pyramids,  an edgeedge with one O(5)Sr3La3 octahedra,  an edgeedge with one O(4)Sr2La3 trigonal bipyramid,  an edgeedge with one O(9)Sr2La3 trigonal bipyramid,  an edgeedge with one O(2)Sr3La2 trigonal bipyramid,  an edgeedge with one O(8)Sr3La2 trigonal bipyramid, and  a faceface with one O(6)Sr2La4 octahedra. The corner-sharing octahedral tilt angles range from 29-50°. In the seventh O site, O(2) is bonded to one Sr(1), one Sr(2), one Sr(3), one La(2), and one La(3) atom to form distorted OSr3La2 trigonal bipyramids that share corners with two equivalent O(6)Sr2La4 octahedra, corners with two equivalent O(5)Sr3La3 octahedra,  a cornercorner with one O(4)Sr2La3 trigonal bipyramid,  a cornercorner with one O(7)Sr2La3 trigonal bipyramid,  a cornercorner with one O(1)SrLa4 trigonal bipyramid, corners with two equivalent O(9)Sr2La3 trigonal bipyramids, corners with two equivalent O(3)Sr3La trigonal pyramids,  an edgeedge with one O(6)Sr2La4 octahedra,  an edgeedge with one O(5)Sr3La3 octahedra,  an edgeedge with one O(4)Sr2La3 trigonal bipyramid,  an edgeedge with one O(7)Sr2La3 trigonal bipyramid,  an edgeedge with one O(9)Sr2La3 trigonal bipyramid,  an edgeedge with one O(1)SrLa4 trigonal bipyramid, edges with two equivalent O(8)Sr3La2 trigonal bipyramids, and  an edgeedge with one O(3)Sr3La trigonal pyramid. The corner-sharing octahedral tilt angles range from 45-64°. In the eighth O site, O(3) is bonded to one Sr(1), one Sr(2), one Sr(3), and one La(2) atom to form distorted OSr3La trigonal pyramids that share  a cornercorner with one O(6)Sr2La4 octahedra,  a cornercorner with one O(5)Sr3La3 octahedra,  a cornercorner with one O(4)Sr2La3 trigonal bipyramid,  a cornercorner with one O(9)Sr2La3 trigonal bipyramid, corners with two equivalent O(7)Sr2La3 trigonal bipyramids, corners with two equivalent O(2)Sr3La2 trigonal bipyramids, corners with two equivalent O(8)Sr3La2 trigonal bipyramids, corners with two equivalent O(1)SrLa4 trigonal bipyramids,  an edgeedge with one O(6)Sr2La4 octahedra,  an edgeedge with one O(5)Sr3La3 octahedra,  an edgeedge with one O(4)Sr2La3 trigonal bipyramid,  an edgeedge with one O(9)Sr2La3 trigonal bipyramid,  an edgeedge with one O(2)Sr3La2 trigonal bipyramid, and  an edgeedge with one O(8)Sr3La2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 49-51°. In the ninth O site, O(4) is bonded to one Sr(1), one Sr(2), one La(1), one La(2), and one La(4) atom to form OSr2La3 trigonal bipyramids that share corners with two equivalent O(6)Sr2La4 octahedra, corners with two equivalent O(5)Sr3La3 octahedra,  a cornercorner with one O(9)Sr2La3 trigonal bipyramid,  a cornercorner with one O(2)Sr3La2 trigonal bipyramid,  a cornercorner with one O(1)SrLa4 trigonal bipyramid, corners with two equivalent O(7)Sr2La3 trigonal bipyramids, corners with two equivalent O(8)Sr3La2 trigonal bipyramids,  a cornercorner with one O(3)Sr3La trigonal pyramid,  an edgeedge with one O(6)Sr2La4 octahedra,  an edgeedge with one O(5)Sr3La3 octahedra,  an edgeedge with one O(7)Sr2La3 trigonal bipyramid,  an edgeedge with one O(9)Sr2La3 trigonal bipyramid,  an edgeedge with one O(2)Sr3La2 trigonal bipyramid,  an edgeedge with one O(8)Sr3La2 trigonal bipyramid,  an edgeedge with one O(1)SrLa4 trigonal bipyramid, and  an edgeedge with one O(3)Sr3La trigonal pyramid. The corner-sharing octahedral tilt angles range from 37-65°.
La4Sr3O9 crystallizes in the monoclinic Cc space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(7), one O(8), and one O(9) atom. The Sr(1)-O(2) bond length is 2.62 Å. The Sr(1)-O(3) bond length is 2.52 Å. The Sr(1)-O(4) bond length is 2.68 Å. The Sr(1)-O(5) bond length is 2.79 Å. The Sr(1)-O(7) bond length is 2.71 Å. The Sr(1)-O(8) bond length is 2.58 Å. The Sr(1)-O(9) bond length is 2.79 Å. In the second Sr site, Sr(2) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted SrO7 pentagonal bipyramids that share corners with three equivalent Sr(3)O7 pentagonal bipyramids,  a cornercorner with one La(1)O6 pentagonal pyramid,  an edgeedge with one Sr(3)O7 pentagonal bipyramid, edges with two equivalent La(1)O6 pentagonal pyramids, and edges with two equivalent La(4)O6 pentagonal pyramids. The Sr(2)-O(2) bond length is 2.81 Å. The Sr(2)-O(3) bond length is 2.48 Å. The Sr(2)-O(4) bond length is 2.56 Å. The Sr(2)-O(5) bond length is 2.77 Å. The Sr(2)-O(6) bond length is 2.66 Å. The Sr(2)-O(7) bond length is 2.67 Å. The Sr(2)-O(8) bond length is 2.59 Å. In the third Sr site, Sr(3) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), one O(8), and one O(9) atom to form distorted SrO7 pentagonal bipyramids that share corners with three equivalent Sr(2)O7 pentagonal bipyramids, corners with two equivalent La(1)O6 pentagonal pyramids,  an edgeedge with one Sr(2)O7 pentagonal bipyramid,  an edgeedge with one La(1)O6 pentagonal pyramid, and edges with two equivalent La(4)O6 pentagonal pyramids. The Sr(3)-O(1) bond length is 2.63 Å. The Sr(3)-O(2) bond length is 2.57 Å. The Sr(3)-O(3) bond length is 2.51 Å. The Sr(3)-O(5) bond length is 2.65 Å. The Sr(3)-O(6) bond length is 2.81 Å. The Sr(3)-O(8) bond length is 2.82 Å. The Sr(3)-O(9) bond length is 2.56 Å. There are four inequivalent La sites. In the first La site, La(1) is bonded to one O(1), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted LaO6 pentagonal pyramids that share  a cornercorner with one Sr(2)O7 pentagonal bipyramid, corners with two equivalent Sr(3)O7 pentagonal bipyramids,  a cornercorner with one La(4)O6 pentagonal pyramid,  an edgeedge with one Sr(3)O7 pentagonal bipyramid, edges with two equivalent Sr(2)O7 pentagonal bipyramids, and edges with two equivalent La(4)O6 pentagonal pyramids. The La(1)-O(1) bond length is 2.49 Å. The La(1)-O(4) bond length is 2.49 Å. The La(1)-O(5) bond length is 2.53 Å. The La(1)-O(6) bond length is 2.58 Å. The La(1)-O(7) bond length is 2.44 Å. The La(1)-O(8) bond length is 2.36 Å. In the second La site, La(2) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(6), one O(8), and one O(9) atom. The La(2)-O(1) bond length is 2.70 Å. The La(2)-O(2) bond length is 2.46 Å. The La(2)-O(3) bond length is 2.36 Å. The La(2)-O(4) bond length is 2.65 Å. The La(2)-O(6) bond length is 2.78 Å. The La(2)-O(8) bond length is 2.50 Å. The La(2)-O(9) bond length is 2.55 Å. In the third La site, La(3) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(9) atom. The La(3)-O(1) bond length is 2.49 Å. The La(3)-O(2) bond length is 2.36 Å. The La(3)-O(5) bond length is 2.58 Å. The La(3)-O(6) bond length is 2.54 Å. The La(3)-O(7) bond length is 2.44 Å. The La(3)-O(9) bond length is 2.45 Å. In the fourth La site, La(4) is bonded to one O(1), one O(4), one O(5), one O(6), one O(7), and one O(9) atom to form distorted LaO6 pentagonal pyramids that share  a cornercorner with one La(1)O6 pentagonal pyramid, edges with two equivalent Sr(2)O7 pentagonal bipyramids, edges with two equivalent Sr(3)O7 pentagonal bipyramids, and edges with two equivalent La(1)O6 pentagonal pyramids. The La(4)-O(1) bond length is 2.53 Å. The La(4)-O(4) bond length is 2.40 Å. The La(4)-O(5) bond length is 2.47 Å. The La(4)-O(6) bond length is 2.46 Å. The La(4)-O(7) bond length is 2.50 Å. The La(4)-O(9) bond length is 2.39 Å. There are nine inequivalent O sites. In the first O site, O(5) is bonded to one Sr(1), one Sr(2), one Sr(3), one La(1), one La(3), and one La(4) atom to form OSr3La3 octahedra that share corners with two equivalent O(6)Sr2La4 octahedra, corners with two equivalent O(4)Sr2La3 trigonal bipyramids, corners with two equivalent O(7)Sr2La3 trigonal bipyramids, corners with two equivalent O(9)Sr2La3 trigonal bipyramids, corners with two equivalent O(2)Sr3La2 trigonal bipyramids, corners with two equivalent O(8)Sr3La2 trigonal bipyramids, corners with two equivalent O(1)SrLa4 trigonal bipyramids,  a cornercorner with one O(3)Sr3La trigonal pyramid,  an edgeedge with one O(4)Sr2La3 trigonal bipyramid,  an edgeedge with one O(9)Sr2La3 trigonal bipyramid,  an edgeedge with one O(2)Sr3La2 trigonal bipyramid,  an edgeedge with one O(8)Sr3La2 trigonal bipyramid,  an edgeedge with one O(1)SrLa4 trigonal bipyramid,  an edgeedge with one O(3)Sr3La trigonal pyramid,  a faceface with one O(6)Sr2La4 octahedra, and  a faceface with one O(7)Sr2La3 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 34-35°. In the second O site, O(6) is bonded to one Sr(2), one Sr(3), one La(1), one La(2), one La(3), and one La(4) atom to form OSr2La4 octahedra that share corners with two equivalent O(5)Sr3La3 octahedra, corners with two equivalent O(4)Sr2La3 trigonal bipyramids, corners with two equivalent O(7)Sr2La3 trigonal bipyramids, corners with two equivalent O(9)Sr2La3 trigonal bipyramids, corners with two equivalent O(2)Sr3La2 trigonal bipyramids, corners with two equivalent O(8)Sr3La2 trigonal bipyramids, corners with two equivalent O(1)SrLa4 trigonal bipyramids,  a cornercorner with one O(3)Sr3La trigonal pyramid,  an edgeedge with one O(4)Sr2La3 trigonal bipyramid,  an edgeedge with one O(7)Sr2La3 trigonal bipyramid,  an edgeedge with one O(9)Sr2La3 trigonal bipyramid,  an edgeedge with one O(2)Sr3La2 trigonal bipyramid,  an edgeedge with one O(8)Sr3La2 trigonal bipyramid,  an edgeedge with one O(3)Sr3La trigonal pyramid,  a faceface with one O(5)Sr3La3 octahedra, and  a faceface with one O(1)SrLa4 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 34-35°. In the third O site, O(7) is bonded to one Sr(1), one Sr(2), one La(1), one La(3), and one La(4) atom to form distorted OSr2La3 trigonal bipyramids that share corners with two equivalent O(6)Sr2La4 octahedra, corners with two equivalent O(5)Sr3La3 octahedra,  a cornercorner with one O(9)Sr2La3 trigonal bipyramid,  a cornercorner with one O(2)Sr3La2 trigonal bipyramid,  a cornercorner with one O(8)Sr3La2 trigonal bipyramid, corners with two equivalent O(4)Sr2La3 trigonal bipyramids, corners with three equivalent O(1)SrLa4 trigonal bipyramids, corners with two equivalent O(3)Sr3La trigonal pyramids,  an edgeedge with one O(6)Sr2La4 octahedra,  an edgeedge with one O(4)Sr2La3 trigonal bipyramid,  an edgeedge with one O(9)Sr2La3 trigonal bipyramid,  an edgeedge with one O(2)Sr3La2 trigonal bipyramid,  an edgeedge with one O(8)Sr3La2 trigonal bipyramid, and  a faceface with one O(5)Sr3La3 octahedra. The corner-sharing octahedral tilt angles range from 29-47°. In the fourth O site, O(8) is bonded to one Sr(1), one Sr(2), one Sr(3), one La(1), and one La(2) atom to form distorted OSr3La2 trigonal bipyramids that share corners with two equivalent O(6)Sr2La4 octahedra, corners with two equivalent O(5)Sr3La3 octahedra,  a cornercorner with one O(7)Sr2La3 trigonal bipyramid,  a cornercorner with one O(9)Sr2La3 trigonal bipyramid,  a cornercorner with one O(1)SrLa4 trigonal bipyramid, corners with two equivalent O(4)Sr2La3 trigonal bipyramids, corners with two equivalent O(3)Sr3La trigonal pyramids,  an edgeedge with one O(6)Sr2La4 octahedra,  an edgeedge with one O(5)Sr3La3 octahedra,  an edgeedge with one O(4)Sr2La3 trigonal bipyramid,  an edgeedge with one O(7)Sr2La3 trigonal bipyramid,  an edgeedge with one O(9)Sr2La3 trigonal bipyramid,  an edgeedge with one O(1)SrLa4 trigonal bipyramid, edges with two equivalent O(2)Sr3La2 trigonal bipyramids, and  an edgeedge with one O(3)Sr3La trigonal pyramid. The corner-sharing octahedral tilt angles range from 42-65°. In the fifth O site, O(9) is bonded to one Sr(1), one Sr(3), one La(2), one La(3), and one La(4) atom to form OSr2La3 trigonal bipyramids that share corners with two equivalent O(6)Sr2La4 octahedra, corners with two equivalent O(5)Sr3La3 octahedra,  a cornercorner with one O(4)Sr2La3 trigonal bipyramid,  a cornercorner with one O(7)Sr2La3 trigonal bipyramid,  a cornercorner with one O(8)Sr3La2 trigonal bipyramid, corners with two equivalent O(2)Sr3La2 trigonal bipyramids, corners with two equivalent O(1)SrLa4 trigonal bipyramids,  a cornercorner with one O(3)Sr3La trigonal pyramid,  an edgeedge with one O(6)Sr2La4 octahedra,  an edgeedge with one O(5)Sr3La3 octahedra,  an edgeedge with one O(4)Sr2La3 trigonal bipyramid,  an edgeedge with one O(7)Sr2La3 trigonal bipyramid,  an edgeedge with one O(2)Sr3La2 trigonal bipyramid,  an edgeedge with one O(8)Sr3La2 trigonal bipyramid,  an edgeedge with one O(1)SrLa4 trigonal bipyramid, and  an edgeedge with one O(3)Sr3La trigonal pyramid. The corner-sharing octahedral tilt angles range from 34-67°. In the sixth O site, O(1) is bonded to one Sr(3), one La(1), one La(2), one La(3), and one La(4) atom to form distorted OSrLa4 trigonal bipyramids that share corners with two equivalent O(6)Sr2La4 octahedra, corners with two equivalent O(5)Sr3La3 octahedra,  a cornercorner with one O(4)Sr2La3 trigonal bipyramid,  a cornercorner with one O(2)Sr3La2 trigonal bipyramid,  a cornercorner with one O(8)Sr3La2 trigonal bipyramid, corners with two equivalent O(9)Sr2La3 trigonal bipyramids, corners with three equivalent O(7)Sr2La3 trigonal bipyramids, corners with two equivalent O(3)Sr3La trigonal pyramids,  an edgeedge with one O(5)Sr3La3 octahedra,  an edgeedge with one O(4)Sr2La3 trigonal bipyramid,  an edgeedge with one O(9)Sr2La3 trigonal bipyramid,  an edgeedge with one O(2)Sr3La2 trigonal bipyramid,  an edgeedge with one O(8)Sr3La2 trigonal bipyramid, and  a faceface with one O(6)Sr2La4 octahedra. The corner-sharing octahedral tilt angles range from 29-50°. In the seventh O site, O(2) is bonded to one Sr(1), one Sr(2), one Sr(3), one La(2), and one La(3) atom to form distorted OSr3La2 trigonal bipyramids that share corners with two equivalent O(6)Sr2La4 octahedra, corners with two equivalent O(5)Sr3La3 octahedra,  a cornercorner with one O(4)Sr2La3 trigonal bipyramid,  a cornercorner with one O(7)Sr2La3 trigonal bipyramid,  a cornercorner with one O(1)SrLa4 trigonal bipyramid, corners with two equivalent O(9)Sr2La3 trigonal bipyramids, corners with two equivalent O(3)Sr3La trigonal pyramids,  an edgeedge with one O(6)Sr2La4 octahedra,  an edgeedge with one O(5)Sr3La3 octahedra,  an edgeedge with one O(4)Sr2La3 trigonal bipyramid,  an edgeedge with one O(7)Sr2La3 trigonal bipyramid,  an edgeedge with one O(9)Sr2La3 trigonal bipyramid,  an edgeedge with one O(1)SrLa4 trigonal bipyramid, edges with two equivalent O(8)Sr3La2 trigonal bipyramids, and  an edgeedge with one O(3)Sr3La trigonal pyramid. The corner-sharing octahedral tilt angles range from 45-64°. In the eighth O site, O(3) is bonded to one Sr(1), one Sr(2), one Sr(3), and one La(2) atom to form distorted OSr3La trigonal pyramids that share  a cornercorner with one O(6)Sr2La4 octahedra,  a cornercorner with one O(5)Sr3La3 octahedra,  a cornercorner with one O(4)Sr2La3 trigonal bipyramid,  a cornercorner with one O(9)Sr2La3 trigonal bipyramid, corners with two equivalent O(7)Sr2La3 trigonal bipyramids, corners with two equivalent O(2)Sr3La2 trigonal bipyramids, corners with two equivalent O(8)Sr3La2 trigonal bipyramids, corners with two equivalent O(1)SrLa4 trigonal bipyramids,  an edgeedge with one O(6)Sr2La4 octahedra,  an edgeedge with one O(5)Sr3La3 octahedra,  an edgeedge with one O(4)Sr2La3 trigonal bipyramid,  an edgeedge with one O(9)Sr2La3 trigonal bipyramid,  an edgeedge with one O(2)Sr3La2 trigonal bipyramid, and  an edgeedge with one O(8)Sr3La2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 49-51°. In the ninth O site, O(4) is bonded to one Sr(1), one Sr(2), one La(1), one La(2), and one La(4) atom to form OSr2La3 trigonal bipyramids that share corners with two equivalent O(6)Sr2La4 octahedra, corners with two equivalent O(5)Sr3La3 octahedra,  a cornercorner with one O(9)Sr2La3 trigonal bipyramid,  a cornercorner with one O(2)Sr3La2 trigonal bipyramid,  a cornercorner with one O(1)SrLa4 trigonal bipyramid, corners with two equivalent O(7)Sr2La3 trigonal bipyramids, corners with two equivalent O(8)Sr3La2 trigonal bipyramids,  a cornercorner with one O(3)Sr3La trigonal pyramid,  an edgeedge with one O(6)Sr2La4 octahedra,  an edgeedge with one O(5)Sr3La3 octahedra,  an edgeedge with one O(7)Sr2La3 trigonal bipyramid,  an edgeedge with one O(9)Sr2La3 trigonal bipyramid,  an edgeedge with one O(2)Sr3La2 trigonal bipyramid,  an edgeedge with one O(8)Sr3La2 trigonal bipyramid,  an edgeedge with one O(1)SrLa4 trigonal bipyramid, and  an edgeedge with one O(3)Sr3La trigonal pyramid. The corner-sharing octahedral tilt angles range from 37-65°.