Ba3YRuPtO9 is (Cubic) Perovskite-derived structured and crystallizes in the trigonal P-3m1 space group. There are three inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to three equivalent O(3) and nine equivalent O(2) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(3)O12 cuboctahedra, corners with six equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Ru(1)O6 octahedra,  a faceface with one Ba(2)O12 cuboctahedra, faces with three equivalent Ba(1)O12 cuboctahedra, faces with three equivalent Ba(3)O12 cuboctahedra, faces with three equivalent Y(1)O6 octahedra, and faces with four equivalent Pt(1)O6 octahedra. The corner-sharing octahedral tilt angles are 12°. In the second Ba site, Ba(2) is bonded to three equivalent O(3) and nine equivalent O(1) atoms to form distorted BaO12 cuboctahedra that share corners with three equivalent Ba(3)O12 cuboctahedra, corners with six equivalent Ba(2)O12 cuboctahedra, corners with three equivalent Pt(1)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra, faces with three equivalent Ba(2)O12 cuboctahedra, faces with three equivalent Ba(3)O12 cuboctahedra, faces with three equivalent Y(2)O6 octahedra, and faces with four equivalent Ru(1)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. In the third Ba site, Ba(3) is bonded to three equivalent O(1), three equivalent O(2), and six equivalent O(3) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Ba(2)O12 cuboctahedra, corners with six equivalent Ba(3)O12 cuboctahedra, faces with three equivalent Ba(1)O12 cuboctahedra, faces with three equivalent Ba(2)O12 cuboctahedra,  a faceface with one Y(1)O6 octahedra,  a faceface with one Y(2)O6 octahedra, faces with three equivalent Ru(1)O6 octahedra, and faces with three equivalent Pt(1)O6 octahedra. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to six equivalent O(2) atoms to form YO6 octahedra that share corners with six equivalent Pt(1)O6 octahedra, faces with two equivalent Ba(3)O12 cuboctahedra, and faces with six equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 1°. In the second Y site, Y(2) is bonded to six equivalent O(1) atoms to form YO6 octahedra that share corners with six equivalent Ru(1)O6 octahedra, faces with two equivalent Ba(3)O12 cuboctahedra, and faces with six equivalent Ba(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 3°. Ru(1) is bonded to three equivalent O(1) and three equivalent O(3) atoms to form RuO6 octahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Y(2)O6 octahedra, faces with three equivalent Ba(3)O12 cuboctahedra, faces with four equivalent Ba(2)O12 cuboctahedra, and  a faceface with one Pt(1)O6 octahedra. The corner-sharing octahedral tilt angles are 3°. Pt(1) is bonded to three equivalent O(2) and three equivalent O(3) atoms to form PtO6 octahedra that share corners with three equivalent Ba(2)O12 cuboctahedra, corners with three equivalent Y(1)O6 octahedra, faces with three equivalent Ba(3)O12 cuboctahedra, faces with four equivalent Ba(1)O12 cuboctahedra, and  a faceface with one Ru(1)O6 octahedra. The corner-sharing octahedral tilt angles are 1°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Ba(3), three equivalent Ba(2), one Y(2), and one Ru(1) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Ba(3), three equivalent Ba(1), one Y(1), and one Pt(1) atom. In the third O site, O(3) is bonded to one Ba(1), one Ba(2), two equivalent Ba(3), one Ru(1), and one Pt(1) atom to form a mixture of distorted face and corner-sharing OBa4RuPt octahedra. The corner-sharing octahedral tilt angles range from 9-60°.
Ba3YRuPtO9 is (Cubic) Perovskite-derived structured and crystallizes in the trigonal P-3m1 space group. There are three inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to three equivalent O(3) and nine equivalent O(2) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(3)O12 cuboctahedra, corners with six equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Ru(1)O6 octahedra,  a faceface with one Ba(2)O12 cuboctahedra, faces with three equivalent Ba(1)O12 cuboctahedra, faces with three equivalent Ba(3)O12 cuboctahedra, faces with three equivalent Y(1)O6 octahedra, and faces with four equivalent Pt(1)O6 octahedra. The corner-sharing octahedral tilt angles are 12°. All Ba(1)-O(3) bond lengths are 3.10 Å. There are six shorter (2.98 Å) and three longer (3.12 Å) Ba(1)-O(2) bond lengths. In the second Ba site, Ba(2) is bonded to three equivalent O(3) and nine equivalent O(1) atoms to form distorted BaO12 cuboctahedra that share corners with three equivalent Ba(3)O12 cuboctahedra, corners with six equivalent Ba(2)O12 cuboctahedra, corners with three equivalent Pt(1)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra, faces with three equivalent Ba(2)O12 cuboctahedra, faces with three equivalent Ba(3)O12 cuboctahedra, faces with three equivalent Y(2)O6 octahedra, and faces with four equivalent Ru(1)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. All Ba(2)-O(3) bond lengths are 2.89 Å. There are six shorter (2.99 Å) and three longer (3.23 Å) Ba(2)-O(1) bond lengths. In the third Ba site, Ba(3) is bonded to three equivalent O(1), three equivalent O(2), and six equivalent O(3) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Ba(2)O12 cuboctahedra, corners with six equivalent Ba(3)O12 cuboctahedra, faces with three equivalent Ba(1)O12 cuboctahedra, faces with three equivalent Ba(2)O12 cuboctahedra,  a faceface with one Y(1)O6 octahedra,  a faceface with one Y(2)O6 octahedra, faces with three equivalent Ru(1)O6 octahedra, and faces with three equivalent Pt(1)O6 octahedra. All Ba(3)-O(1) bond lengths are 3.12 Å. All Ba(3)-O(2) bond lengths are 2.95 Å. All Ba(3)-O(3) bond lengths are 2.99 Å. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to six equivalent O(2) atoms to form YO6 octahedra that share corners with six equivalent Pt(1)O6 octahedra, faces with two equivalent Ba(3)O12 cuboctahedra, and faces with six equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 1°. All Y(1)-O(2) bond lengths are 2.21 Å. In the second Y site, Y(2) is bonded to six equivalent O(1) atoms to form YO6 octahedra that share corners with six equivalent Ru(1)O6 octahedra, faces with two equivalent Ba(3)O12 cuboctahedra, and faces with six equivalent Ba(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 3°. All Y(2)-O(1) bond lengths are 2.23 Å. Ru(1) is bonded to three equivalent O(1) and three equivalent O(3) atoms to form RuO6 octahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Y(2)O6 octahedra, faces with three equivalent Ba(3)O12 cuboctahedra, faces with four equivalent Ba(2)O12 cuboctahedra, and  a faceface with one Pt(1)O6 octahedra. The corner-sharing octahedral tilt angles are 3°. All Ru(1)-O(1) bond lengths are 1.95 Å. All Ru(1)-O(3) bond lengths are 2.05 Å. Pt(1) is bonded to three equivalent O(2) and three equivalent O(3) atoms to form PtO6 octahedra that share corners with three equivalent Ba(2)O12 cuboctahedra, corners with three equivalent Y(1)O6 octahedra, faces with three equivalent Ba(3)O12 cuboctahedra, faces with four equivalent Ba(1)O12 cuboctahedra, and  a faceface with one Ru(1)O6 octahedra. The corner-sharing octahedral tilt angles are 1°. All Pt(1)-O(2) bond lengths are 2.00 Å. All Pt(1)-O(3) bond lengths are 2.08 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Ba(3), three equivalent Ba(2), one Y(2), and one Ru(1) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Ba(3), three equivalent Ba(1), one Y(1), and one Pt(1) atom. In the third O site, O(3) is bonded to one Ba(1), one Ba(2), two equivalent Ba(3), one Ru(1), and one Pt(1) atom to form a mixture of distorted face and corner-sharing OBa4RuPt octahedra. The corner-sharing octahedral tilt angles range from 9-60°.