LaCaGaO4 is Spinel-derived structured and crystallizes in the orthorhombic Pnma space group. Ca(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CaO6 octahedra that share corners with four equivalent La(1)O6 octahedra, corners with two equivalent Ga(1)O4 tetrahedra, edges with two equivalent Ca(1)O6 octahedra, edges with two equivalent La(1)O6 octahedra, and edges with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-65°. La(1) is bonded to one O(2), one O(3), and four equivalent O(1) atoms to form LaO6 octahedra that share corners with four equivalent Ca(1)O6 octahedra, corners with four equivalent La(1)O6 octahedra, corners with four equivalent Ga(1)O4 tetrahedra, edges with two equivalent Ca(1)O6 octahedra, and  an edgeedge with one Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-65°. Ga(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form GaO4 tetrahedra that share corners with two equivalent Ca(1)O6 octahedra, corners with four equivalent La(1)O6 octahedra,  an edgeedge with one La(1)O6 octahedra, and edges with two equivalent Ca(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-61°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Ca(1), two equivalent La(1), and one Ga(1) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Ca(1), one La(1), and one Ga(1) atom. In the third O site, O(3) is bonded to two equivalent Ca(1), one La(1), and one Ga(1) atom to form distorted corner-sharing OCa2LaGa tetrahedra.
LaCaGaO4 is Spinel-derived structured and crystallizes in the orthorhombic Pnma space group. Ca(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CaO6 octahedra that share corners with four equivalent La(1)O6 octahedra, corners with two equivalent Ga(1)O4 tetrahedra, edges with two equivalent Ca(1)O6 octahedra, edges with two equivalent La(1)O6 octahedra, and edges with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-65°. Both Ca(1)-O(1) bond lengths are 2.44 Å. Both Ca(1)-O(2) bond lengths are 2.36 Å. Both Ca(1)-O(3) bond lengths are 2.38 Å. La(1) is bonded to one O(2), one O(3), and four equivalent O(1) atoms to form LaO6 octahedra that share corners with four equivalent Ca(1)O6 octahedra, corners with four equivalent La(1)O6 octahedra, corners with four equivalent Ga(1)O4 tetrahedra, edges with two equivalent Ca(1)O6 octahedra, and  an edgeedge with one Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-65°. The La(1)-O(2) bond length is 2.37 Å. The La(1)-O(3) bond length is 2.52 Å. There are two shorter (2.44 Å) and two longer (2.50 Å) La(1)-O(1) bond lengths. Ga(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form GaO4 tetrahedra that share corners with two equivalent Ca(1)O6 octahedra, corners with four equivalent La(1)O6 octahedra,  an edgeedge with one La(1)O6 octahedra, and edges with two equivalent Ca(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-61°. The Ga(1)-O(2) bond length is 1.87 Å. The Ga(1)-O(3) bond length is 1.84 Å. Both Ga(1)-O(1) bond lengths are 1.90 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Ca(1), two equivalent La(1), and one Ga(1) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Ca(1), one La(1), and one Ga(1) atom. In the third O site, O(3) is bonded to two equivalent Ca(1), one La(1), and one Ga(1) atom to form distorted corner-sharing OCa2LaGa tetrahedra.