Ba2LaTaO6 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic C2/m space group. Ba(1) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. La(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form LaO6 octahedra that share corners with six equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 17-22°. Ta(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form TaO6 octahedra that share corners with six equivalent La(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 17-22°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Ba(1), one La(1), and one Ta(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ba(1), one La(1), and one Ta(1) atom.
Ba2LaTaO6 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic C2/m space group. Ba(1) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. The Ba(1)-O(2) bond length is 2.72 Å. There are two shorter (2.81 Å) and two longer (2.85 Å) Ba(1)-O(1) bond lengths. La(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form LaO6 octahedra that share corners with six equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 17-22°. Both La(1)-O(2) bond lengths are 2.39 Å. All La(1)-O(1) bond lengths are 2.38 Å. Ta(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form TaO6 octahedra that share corners with six equivalent La(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 17-22°. Both Ta(1)-O(2) bond lengths are 2.00 Å. All Ta(1)-O(1) bond lengths are 2.00 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Ba(1), one La(1), and one Ta(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ba(1), one La(1), and one Ta(1) atom.