KGeCPO7 crystallizes in the monoclinic P2_1 space group. K(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(7) atom. Ge(1) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form GeO6 octahedra that share corners with four equivalent P(1)O4 tetrahedra. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. P(1) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share corners with four equivalent Ge(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 30-41°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one K(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted L-shaped geometry to one K(1), one Ge(1), and one C(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one Ge(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one K(1), one Ge(1), and one P(1) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one K(1), one Ge(1), and one P(1) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Ge(1) and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one K(1), one Ge(1), and one P(1) atom.
KGeCPO7 crystallizes in the monoclinic P2_1 space group. K(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(7) atom. The K(1)-O(1) bond length is 2.56 Å. The K(1)-O(2) bond length is 2.95 Å. The K(1)-O(3) bond length is 2.90 Å. The K(1)-O(4) bond length is 3.27 Å. The K(1)-O(5) bond length is 2.84 Å. The K(1)-O(7) bond length is 3.24 Å. Ge(1) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form GeO6 octahedra that share corners with four equivalent P(1)O4 tetrahedra. The Ge(1)-O(2) bond length is 1.92 Å. The Ge(1)-O(3) bond length is 1.93 Å. The Ge(1)-O(4) bond length is 1.90 Å. The Ge(1)-O(5) bond length is 1.94 Å. The Ge(1)-O(6) bond length is 1.89 Å. The Ge(1)-O(7) bond length is 1.90 Å. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. The C(1)-O(1) bond length is 1.23 Å. The C(1)-O(2) bond length is 1.35 Å. The C(1)-O(3) bond length is 1.35 Å. P(1) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share corners with four equivalent Ge(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 30-41°. The P(1)-O(4) bond length is 1.55 Å. The P(1)-O(5) bond length is 1.54 Å. The P(1)-O(6) bond length is 1.54 Å. The P(1)-O(7) bond length is 1.56 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one K(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted L-shaped geometry to one K(1), one Ge(1), and one C(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one Ge(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one K(1), one Ge(1), and one P(1) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one K(1), one Ge(1), and one P(1) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Ge(1) and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one K(1), one Ge(1), and one P(1) atom.