Ba2La(CuO2)3 crystallizes in the tetragonal P4/mmm space group. Ba(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. La(1) is bonded in a body-centered cubic geometry to eight equivalent O(2) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1) and four equivalent O(2) atoms to form corner-sharing CuO5 square pyramids. In the second Cu site, Cu(2) is bonded in a linear geometry to two equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Ba(1), one Cu(1), and one Cu(2) atom to form distorted OBa4Cu2 octahedra that share corners with five equivalent O(1)Ba4Cu2 octahedra, corners with eight equivalent O(2)Ba2La2Cu2 octahedra, edges with four equivalent O(1)Ba4Cu2 octahedra, and faces with four equivalent O(2)Ba2La2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the second O site, O(2) is bonded to two equivalent Ba(1), two equivalent La(1), and two equivalent Cu(1) atoms to form distorted OBa2La2Cu2 octahedra that share corners with four equivalent O(1)Ba4Cu2 octahedra, corners with eight equivalent O(2)Ba2La2Cu2 octahedra, edges with three equivalent O(2)Ba2La2Cu2 octahedra, faces with two equivalent O(1)Ba4Cu2 octahedra, and faces with four equivalent O(2)Ba2La2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-67°.
Ba2La(CuO2)3 crystallizes in the tetragonal P4/mmm space group. Ba(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. All Ba(1)-O(1) bond lengths are 2.84 Å. All Ba(1)-O(2) bond lengths are 2.91 Å. La(1) is bonded in a body-centered cubic geometry to eight equivalent O(2) atoms. All La(1)-O(2) bond lengths are 2.54 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1) and four equivalent O(2) atoms to form corner-sharing CuO5 square pyramids. The Cu(1)-O(1) bond length is 2.42 Å. All Cu(1)-O(2) bond lengths are 1.99 Å. In the second Cu site, Cu(2) is bonded in a linear geometry to two equivalent O(1) atoms. Both Cu(2)-O(1) bond lengths are 1.81 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Ba(1), one Cu(1), and one Cu(2) atom to form distorted OBa4Cu2 octahedra that share corners with five equivalent O(1)Ba4Cu2 octahedra, corners with eight equivalent O(2)Ba2La2Cu2 octahedra, edges with four equivalent O(1)Ba4Cu2 octahedra, and faces with four equivalent O(2)Ba2La2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the second O site, O(2) is bonded to two equivalent Ba(1), two equivalent La(1), and two equivalent Cu(1) atoms to form distorted OBa2La2Cu2 octahedra that share corners with four equivalent O(1)Ba4Cu2 octahedra, corners with eight equivalent O(2)Ba2La2Cu2 octahedra, edges with three equivalent O(2)Ba2La2Cu2 octahedra, faces with two equivalent O(1)Ba4Cu2 octahedra, and faces with four equivalent O(2)Ba2La2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-67°.