CaCoGeO4 is Spinel-derived structured and crystallizes in the orthorhombic Pnma space group. Ca(1) is bonded to one O(1), one O(3), and four equivalent O(2) atoms to form CaO6 octahedra that share corners with four equivalent Ca(1)O6 octahedra, corners with four equivalent Co(1)O6 octahedra, corners with four equivalent Ge(1)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, and  an edgeedge with one Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-59°. Co(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CoO6 octahedra that share corners with four equivalent Ca(1)O6 octahedra, corners with two equivalent Ge(1)O4 tetrahedra, edges with two equivalent Ca(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-59°. Ge(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form GeO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra, corners with four equivalent Ca(1)O6 octahedra,  an edgeedge with one Ca(1)O6 octahedra, and edges with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-64°. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1), two equivalent Co(1), and one Ge(1) atom to form distorted corner-sharing OCaCo2Ge tetrahedra. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Ca(1), one Co(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Ca(1), two equivalent Co(1), and one Ge(1) atom.
CaCoGeO4 is Spinel-derived structured and crystallizes in the orthorhombic Pnma space group. Ca(1) is bonded to one O(1), one O(3), and four equivalent O(2) atoms to form CaO6 octahedra that share corners with four equivalent Ca(1)O6 octahedra, corners with four equivalent Co(1)O6 octahedra, corners with four equivalent Ge(1)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, and  an edgeedge with one Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-59°. The Ca(1)-O(1) bond length is 2.46 Å. The Ca(1)-O(3) bond length is 2.33 Å. There are two shorter (2.30 Å) and two longer (2.45 Å) Ca(1)-O(2) bond lengths. Co(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CoO6 octahedra that share corners with four equivalent Ca(1)O6 octahedra, corners with two equivalent Ge(1)O4 tetrahedra, edges with two equivalent Ca(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-59°. Both Co(1)-O(1) bond lengths are 2.19 Å. Both Co(1)-O(2) bond lengths are 2.20 Å. Both Co(1)-O(3) bond lengths are 2.15 Å. Ge(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form GeO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra, corners with four equivalent Ca(1)O6 octahedra,  an edgeedge with one Ca(1)O6 octahedra, and edges with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-64°. The Ge(1)-O(1) bond length is 1.77 Å. The Ge(1)-O(3) bond length is 1.80 Å. Both Ge(1)-O(2) bond lengths are 1.79 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1), two equivalent Co(1), and one Ge(1) atom to form distorted corner-sharing OCaCo2Ge tetrahedra. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Ca(1), one Co(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Ca(1), two equivalent Co(1), and one Ge(1) atom.