NaTbGeO4 is Hausmannite-derived structured and crystallizes in the orthorhombic Pnma space group. Na(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form NaO6 octahedra that share corners with four equivalent Tb(1)O6 octahedra, corners with two equivalent Ge(1)O4 tetrahedra, edges with two equivalent Na(1)O6 octahedra, edges with two equivalent Tb(1)O6 octahedra, and edges with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 61-66°. Tb(1) is bonded to one O(1), one O(3), and four equivalent O(2) atoms to form TbO6 octahedra that share corners with four equivalent Na(1)O6 octahedra, corners with four equivalent Tb(1)O6 octahedra, corners with four equivalent Ge(1)O4 tetrahedra, edges with two equivalent Na(1)O6 octahedra, and  an edgeedge with one Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-66°. 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 Na(1)O6 octahedra, corners with four equivalent Tb(1)O6 octahedra,  an edgeedge with one Tb(1)O6 octahedra, and edges with two equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-63°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to two equivalent Na(1), one Tb(1), and one Ge(1) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Na(1), two equivalent Tb(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Na(1), one Tb(1), and one Ge(1) atom.
NaTbGeO4 is Hausmannite-derived structured and crystallizes in the orthorhombic Pnma space group. Na(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form NaO6 octahedra that share corners with four equivalent Tb(1)O6 octahedra, corners with two equivalent Ge(1)O4 tetrahedra, edges with two equivalent Na(1)O6 octahedra, edges with two equivalent Tb(1)O6 octahedra, and edges with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 61-66°. Both Na(1)-O(1) bond lengths are 2.44 Å. Both Na(1)-O(2) bond lengths are 2.56 Å. Both Na(1)-O(3) bond lengths are 2.41 Å. Tb(1) is bonded to one O(1), one O(3), and four equivalent O(2) atoms to form TbO6 octahedra that share corners with four equivalent Na(1)O6 octahedra, corners with four equivalent Tb(1)O6 octahedra, corners with four equivalent Ge(1)O4 tetrahedra, edges with two equivalent Na(1)O6 octahedra, and  an edgeedge with one Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-66°. The Tb(1)-O(1) bond length is 2.24 Å. The Tb(1)-O(3) bond length is 2.30 Å. There are two shorter (2.30 Å) and two longer (2.38 Å) Tb(1)-O(2) bond lengths. 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 Na(1)O6 octahedra, corners with four equivalent Tb(1)O6 octahedra,  an edgeedge with one Tb(1)O6 octahedra, and edges with two equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-63°. The Ge(1)-O(1) bond length is 1.76 Å. The Ge(1)-O(3) bond length is 1.75 Å. Both Ge(1)-O(2) bond lengths are 1.81 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to two equivalent Na(1), one Tb(1), and one Ge(1) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Na(1), two equivalent Tb(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Na(1), one Tb(1), and one Ge(1) atom.