SrLa4TiAl4O15 is (Cubic) Perovskite-derived structured and crystallizes in the orthorhombic Cmmm space group. Sr(1) is bonded to two equivalent O(4), two equivalent O(6), and eight equivalent O(3) atoms to form SrO12 cuboctahedra that share corners with two equivalent Sr(1)O12 cuboctahedra, corners with two equivalent La(2)O12 cuboctahedra, corners with eight equivalent La(1)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, faces with four equivalent Ti(1)O6 octahedra, and faces with four equivalent Al(1)O6 octahedra. There are two inequivalent La sites. In the first La site, La(1) is bonded to one O(5), one O(6), two equivalent O(4), four equivalent O(1), and four equivalent O(3) atoms to form LaO12 cuboctahedra that share corners with three equivalent La(1)O12 cuboctahedra, corners with four equivalent Sr(1)O12 cuboctahedra, corners with five equivalent La(2)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, faces with two equivalent Ti(1)O6 octahedra, faces with two equivalent Al(2)O6 octahedra, and faces with four equivalent Al(1)O6 octahedra. In the second La site, La(2) is bonded to one O(4), three equivalent O(5), four equivalent O(1), and four equivalent O(2) atoms to form LaO12 cuboctahedra that share  a cornercorner with one Sr(1)O12 cuboctahedra, corners with five equivalent La(1)O12 cuboctahedra, corners with six equivalent La(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with four equivalent La(2)O12 cuboctahedra, faces with two equivalent Al(1)O6 octahedra, and faces with six equivalent Al(2)O6 octahedra. Ti(1) is bonded to two equivalent O(6) and four equivalent O(3) atoms to form TiO6 octahedra that share corners with two equivalent Ti(1)O6 octahedra, corners with four equivalent Al(1)O6 octahedra, faces with four equivalent Sr(1)O12 cuboctahedra, and faces with four equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form AlO6 octahedra that share corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Al(1)O6 octahedra, corners with two equivalent Al(2)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with four equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second Al site, Al(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form AlO6 octahedra that share corners with two equivalent Al(1)O6 octahedra, corners with four equivalent Al(2)O6 octahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with six equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are six inequivalent O sites. In the first O site, O(6) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent La(1), and two equivalent Ti(1) atoms. In the second O site, O(1) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), one Al(1), and one Al(2) atom. In the third O site, O(2) is bonded in a distorted linear geometry to four equivalent La(2) and two equivalent Al(2) atoms. In the fourth O site, O(3) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent La(1), one Ti(1), and one Al(1) atom. In the fifth O site, O(4) is bonded in a distorted linear geometry to one Sr(1), one La(2), two equivalent La(1), and two equivalent Al(1) atoms. In the sixth O site, O(5) is bonded to one La(1), three equivalent La(2), and two equivalent Al(2) atoms to form a mixture of distorted edge and corner-sharing OLa4Al2 octahedra. The corner-sharing octahedral tilt angles range from 0-1°.
SrLa4TiAl4O15 is (Cubic) Perovskite-derived structured and crystallizes in the orthorhombic Cmmm space group. Sr(1) is bonded to two equivalent O(4), two equivalent O(6), and eight equivalent O(3) atoms to form SrO12 cuboctahedra that share corners with two equivalent Sr(1)O12 cuboctahedra, corners with two equivalent La(2)O12 cuboctahedra, corners with eight equivalent La(1)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, faces with four equivalent Ti(1)O6 octahedra, and faces with four equivalent Al(1)O6 octahedra. Both Sr(1)-O(4) bond lengths are 2.77 Å. Both Sr(1)-O(6) bond lengths are 2.71 Å. All Sr(1)-O(3) bond lengths are 2.75 Å. There are two inequivalent La sites. In the first La site, La(1) is bonded to one O(5), one O(6), two equivalent O(4), four equivalent O(1), and four equivalent O(3) atoms to form LaO12 cuboctahedra that share corners with three equivalent La(1)O12 cuboctahedra, corners with four equivalent Sr(1)O12 cuboctahedra, corners with five equivalent La(2)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, faces with two equivalent Ti(1)O6 octahedra, faces with two equivalent Al(2)O6 octahedra, and faces with four equivalent Al(1)O6 octahedra. The La(1)-O(5) bond length is 2.65 Å. The La(1)-O(6) bond length is 2.78 Å. Both La(1)-O(4) bond lengths are 2.71 Å. All La(1)-O(1) bond lengths are 2.69 Å. All La(1)-O(3) bond lengths are 2.71 Å. In the second La site, La(2) is bonded to one O(4), three equivalent O(5), four equivalent O(1), and four equivalent O(2) atoms to form LaO12 cuboctahedra that share  a cornercorner with one Sr(1)O12 cuboctahedra, corners with five equivalent La(1)O12 cuboctahedra, corners with six equivalent La(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with four equivalent La(2)O12 cuboctahedra, faces with two equivalent Al(1)O6 octahedra, and faces with six equivalent Al(2)O6 octahedra. The La(2)-O(4) bond length is 2.65 Å. There are two shorter (2.71 Å) and one longer (2.73 Å) La(2)-O(5) bond length. All La(2)-O(1) bond lengths are 2.71 Å. All La(2)-O(2) bond lengths are 2.72 Å. Ti(1) is bonded to two equivalent O(6) and four equivalent O(3) atoms to form TiO6 octahedra that share corners with two equivalent Ti(1)O6 octahedra, corners with four equivalent Al(1)O6 octahedra, faces with four equivalent Sr(1)O12 cuboctahedra, and faces with four equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. Both Ti(1)-O(6) bond lengths are 1.93 Å. All Ti(1)-O(3) bond lengths are 1.95 Å. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form AlO6 octahedra that share corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Al(1)O6 octahedra, corners with two equivalent Al(2)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with four equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. Both Al(1)-O(1) bond lengths are 1.92 Å. Both Al(1)-O(3) bond lengths are 1.90 Å. Both Al(1)-O(4) bond lengths are 1.93 Å. In the second Al site, Al(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form AlO6 octahedra that share corners with two equivalent Al(1)O6 octahedra, corners with four equivalent Al(2)O6 octahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with six equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. Both Al(2)-O(1) bond lengths are 1.91 Å. Both Al(2)-O(2) bond lengths are 1.91 Å. Both Al(2)-O(5) bond lengths are 1.93 Å. There are six inequivalent O sites. In the first O site, O(6) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent La(1), and two equivalent Ti(1) atoms. In the second O site, O(1) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), one Al(1), and one Al(2) atom. In the third O site, O(2) is bonded in a distorted linear geometry to four equivalent La(2) and two equivalent Al(2) atoms. In the fourth O site, O(3) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent La(1), one Ti(1), and one Al(1) atom. In the fifth O site, O(4) is bonded in a distorted linear geometry to one Sr(1), one La(2), two equivalent La(1), and two equivalent Al(1) atoms. In the sixth O site, O(5) is bonded to one La(1), three equivalent La(2), and two equivalent Al(2) atoms to form a mixture of distorted edge and corner-sharing OLa4Al2 octahedra. The corner-sharing octahedral tilt angles range from 0-1°.