CaLa4Ti3RuO15 crystallizes in the trigonal P3m1 space group. Ca(1) is bonded to three equivalent O(1), three equivalent O(2), and six equivalent O(3) atoms to form CaO12 cuboctahedra that share corners with three equivalent La(1)O12 cuboctahedra, corners with three equivalent La(2)O12 cuboctahedra, corners with six equivalent Ca(1)O12 cuboctahedra, faces with three equivalent La(3)O12 cuboctahedra, faces with three equivalent La(4)O12 cuboctahedra,  a faceface with one Ti(1)O6 octahedra,  a faceface with one Ti(2)O6 octahedra, faces with three equivalent Ti(3)O6 octahedra, and faces with three equivalent Ru(1)O6 octahedra. There are four inequivalent La sites. In the first La site, La(1) is bonded to three equivalent O(1), three equivalent O(4), and six equivalent O(5) atoms to form distorted LaO12 cuboctahedra that share corners with three equivalent Ca(1)O12 cuboctahedra, corners with six equivalent La(1)O12 cuboctahedra, corners with three equivalent Ti(2)O6 octahedra,  a faceface with one La(3)O12 cuboctahedra, faces with three equivalent La(2)O12 cuboctahedra, faces with three equivalent La(4)O12 cuboctahedra,  a faceface with one Ti(3)O6 octahedra, and faces with three equivalent Ti(1)O6 octahedra. The corner-sharing octahedral tilt angles are 24°. In the second La site, La(2) is bonded to three equivalent O(2), three equivalent O(5), and six equivalent O(4) atoms to form distorted LaO12 cuboctahedra that share corners with three equivalent Ca(1)O12 cuboctahedra, corners with six equivalent La(2)O12 cuboctahedra, corners with three equivalent Ti(1)O6 octahedra,  a faceface with one La(4)O12 cuboctahedra, faces with three equivalent La(1)O12 cuboctahedra, faces with three equivalent La(3)O12 cuboctahedra,  a faceface with one Ru(1)O6 octahedra, and faces with three equivalent Ti(2)O6 octahedra. The corner-sharing octahedral tilt angles are 25°. In the third La site, La(3) is bonded to three equivalent O(3), three equivalent O(4), and six equivalent O(2) atoms to form LaO12 cuboctahedra that share corners with three equivalent La(4)O12 cuboctahedra, corners with six equivalent La(3)O12 cuboctahedra,  a faceface with one La(1)O12 cuboctahedra, faces with three equivalent Ca(1)O12 cuboctahedra, faces with three equivalent La(2)O12 cuboctahedra,  a faceface with one Ti(3)O6 octahedra, faces with three equivalent Ti(2)O6 octahedra, and faces with three equivalent Ru(1)O6 octahedra. In the fourth La site, La(4) is bonded to three equivalent O(3), three equivalent O(5), and six equivalent O(1) atoms to form LaO12 cuboctahedra that share corners with three equivalent La(3)O12 cuboctahedra, corners with six equivalent La(4)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra, faces with three equivalent Ca(1)O12 cuboctahedra, faces with three equivalent La(1)O12 cuboctahedra,  a faceface with one Ru(1)O6 octahedra, faces with three equivalent Ti(1)O6 octahedra, and faces with three equivalent Ti(3)O6 octahedra. There are three inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to three equivalent O(1) and three equivalent O(5) atoms to form TiO6 octahedra that share corners with three equivalent La(2)O12 cuboctahedra, corners with three equivalent Ti(3)O6 octahedra,  a faceface with one Ca(1)O12 cuboctahedra, faces with three equivalent La(1)O12 cuboctahedra, and faces with three equivalent La(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 4°. In the second Ti site, Ti(2) is bonded to three equivalent O(2) and three equivalent O(4) atoms to form TiO6 octahedra that share corners with three equivalent La(1)O12 cuboctahedra, corners with three equivalent Ru(1)O6 octahedra,  a faceface with one Ca(1)O12 cuboctahedra, faces with three equivalent La(2)O12 cuboctahedra, and faces with three equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 3°. In the third Ti site, Ti(3) is bonded to three equivalent O(1) and three equivalent O(3) atoms to form TiO6 octahedra that share corners with three equivalent Ti(1)O6 octahedra, corners with three equivalent Ru(1)O6 octahedra,  a faceface with one La(1)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra, faces with three equivalent Ca(1)O12 cuboctahedra, and faces with three equivalent La(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. Ru(1) is bonded to three equivalent O(2) and three equivalent O(3) atoms to form RuO6 octahedra that share corners with three equivalent Ti(2)O6 octahedra, corners with three equivalent Ti(3)O6 octahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra, faces with three equivalent Ca(1)O12 cuboctahedra, and faces with three equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Ca(1), one La(1), two equivalent La(4), one Ti(1), and one Ti(3) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Ca(1), one La(2), two equivalent La(3), one Ti(2), and one Ru(1) atom. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Ca(1), one La(3), one La(4), one Ti(3), and one Ru(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one La(1), one La(3), two equivalent La(2), and one Ti(2) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one La(2), one La(4), two equivalent La(1), and one Ti(1) atom.
CaLa4Ti3RuO15 crystallizes in the trigonal P3m1 space group. Ca(1) is bonded to three equivalent O(1), three equivalent O(2), and six equivalent O(3) atoms to form CaO12 cuboctahedra that share corners with three equivalent La(1)O12 cuboctahedra, corners with three equivalent La(2)O12 cuboctahedra, corners with six equivalent Ca(1)O12 cuboctahedra, faces with three equivalent La(3)O12 cuboctahedra, faces with three equivalent La(4)O12 cuboctahedra,  a faceface with one Ti(1)O6 octahedra,  a faceface with one Ti(2)O6 octahedra, faces with three equivalent Ti(3)O6 octahedra, and faces with three equivalent Ru(1)O6 octahedra. All Ca(1)-O(1) bond lengths are 2.76 Å. All Ca(1)-O(2) bond lengths are 2.79 Å. All Ca(1)-O(3) bond lengths are 2.78 Å. There are four inequivalent La sites. In the first La site, La(1) is bonded to three equivalent O(1), three equivalent O(4), and six equivalent O(5) atoms to form distorted LaO12 cuboctahedra that share corners with three equivalent Ca(1)O12 cuboctahedra, corners with six equivalent La(1)O12 cuboctahedra, corners with three equivalent Ti(2)O6 octahedra,  a faceface with one La(3)O12 cuboctahedra, faces with three equivalent La(2)O12 cuboctahedra, faces with three equivalent La(4)O12 cuboctahedra,  a faceface with one Ti(3)O6 octahedra, and faces with three equivalent Ti(1)O6 octahedra. The corner-sharing octahedral tilt angles are 24°. All La(1)-O(1) bond lengths are 2.93 Å. All La(1)-O(4) bond lengths are 2.50 Å. All La(1)-O(5) bond lengths are 2.79 Å. In the second La site, La(2) is bonded to three equivalent O(2), three equivalent O(5), and six equivalent O(4) atoms to form distorted LaO12 cuboctahedra that share corners with three equivalent Ca(1)O12 cuboctahedra, corners with six equivalent La(2)O12 cuboctahedra, corners with three equivalent Ti(1)O6 octahedra,  a faceface with one La(4)O12 cuboctahedra, faces with three equivalent La(1)O12 cuboctahedra, faces with three equivalent La(3)O12 cuboctahedra,  a faceface with one Ru(1)O6 octahedra, and faces with three equivalent Ti(2)O6 octahedra. The corner-sharing octahedral tilt angles are 25°. All La(2)-O(2) bond lengths are 2.94 Å. All La(2)-O(5) bond lengths are 2.50 Å. All La(2)-O(4) bond lengths are 2.79 Å. In the third La site, La(3) is bonded to three equivalent O(3), three equivalent O(4), and six equivalent O(2) atoms to form LaO12 cuboctahedra that share corners with three equivalent La(4)O12 cuboctahedra, corners with six equivalent La(3)O12 cuboctahedra,  a faceface with one La(1)O12 cuboctahedra, faces with three equivalent Ca(1)O12 cuboctahedra, faces with three equivalent La(2)O12 cuboctahedra,  a faceface with one Ti(3)O6 octahedra, faces with three equivalent Ti(2)O6 octahedra, and faces with three equivalent Ru(1)O6 octahedra. All La(3)-O(3) bond lengths are 2.93 Å. All La(3)-O(4) bond lengths are 2.51 Å. All La(3)-O(2) bond lengths are 2.78 Å. In the fourth La site, La(4) is bonded to three equivalent O(3), three equivalent O(5), and six equivalent O(1) atoms to form LaO12 cuboctahedra that share corners with three equivalent La(3)O12 cuboctahedra, corners with six equivalent La(4)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra, faces with three equivalent Ca(1)O12 cuboctahedra, faces with three equivalent La(1)O12 cuboctahedra,  a faceface with one Ru(1)O6 octahedra, faces with three equivalent Ti(1)O6 octahedra, and faces with three equivalent Ti(3)O6 octahedra. All La(4)-O(3) bond lengths are 2.90 Å. All La(4)-O(5) bond lengths are 2.51 Å. All La(4)-O(1) bond lengths are 2.78 Å. There are three inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to three equivalent O(1) and three equivalent O(5) atoms to form TiO6 octahedra that share corners with three equivalent La(2)O12 cuboctahedra, corners with three equivalent Ti(3)O6 octahedra,  a faceface with one Ca(1)O12 cuboctahedra, faces with three equivalent La(1)O12 cuboctahedra, and faces with three equivalent La(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 4°. All Ti(1)-O(1) bond lengths are 2.06 Å. All Ti(1)-O(5) bond lengths are 1.88 Å. In the second Ti site, Ti(2) is bonded to three equivalent O(2) and three equivalent O(4) atoms to form TiO6 octahedra that share corners with three equivalent La(1)O12 cuboctahedra, corners with three equivalent Ru(1)O6 octahedra,  a faceface with one Ca(1)O12 cuboctahedra, faces with three equivalent La(2)O12 cuboctahedra, and faces with three equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 3°. All Ti(2)-O(2) bond lengths are 2.04 Å. All Ti(2)-O(4) bond lengths are 1.88 Å. In the third Ti site, Ti(3) is bonded to three equivalent O(1) and three equivalent O(3) atoms to form TiO6 octahedra that share corners with three equivalent Ti(1)O6 octahedra, corners with three equivalent Ru(1)O6 octahedra,  a faceface with one La(1)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra, faces with three equivalent Ca(1)O12 cuboctahedra, and faces with three equivalent La(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. All Ti(3)-O(1) bond lengths are 1.95 Å. All Ti(3)-O(3) bond lengths are 1.95 Å. Ru(1) is bonded to three equivalent O(2) and three equivalent O(3) atoms to form RuO6 octahedra that share corners with three equivalent Ti(2)O6 octahedra, corners with three equivalent Ti(3)O6 octahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra, faces with three equivalent Ca(1)O12 cuboctahedra, and faces with three equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. All Ru(1)-O(2) bond lengths are 1.98 Å. All Ru(1)-O(3) bond lengths are 1.97 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Ca(1), one La(1), two equivalent La(4), one Ti(1), and one Ti(3) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Ca(1), one La(2), two equivalent La(3), one Ti(2), and one Ru(1) atom. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Ca(1), one La(3), one La(4), one Ti(3), and one Ru(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one La(1), one La(3), two equivalent La(2), and one Ti(2) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one La(2), one La(4), two equivalent La(1), and one Ti(1) atom.