KCBiPO7 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(5), one O(6), and one O(7) atom. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. Bi(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 distorted BiO6 octahedra that share corners with four equivalent P(1)O4 tetrahedra. 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 Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-48°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one K(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(1), one C(1), and one Bi(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(1), one C(1), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Bi(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a 1-coordinate geometry to one K(1), one Bi(1), and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one K(1), one Bi(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one K(1), one Bi(1), and one P(1) atom.
KCBiPO7 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(5), one O(6), and one O(7) atom. The K(1)-O(1) bond length is 2.60 Å. The K(1)-O(2) bond length is 2.82 Å. The K(1)-O(3) bond length is 2.71 Å. The K(1)-O(5) bond length is 2.84 Å. The K(1)-O(6) bond length is 2.95 Å. The K(1)-O(7) bond length is 2.85 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 1.27 Å. The C(1)-O(2) bond length is 1.31 Å. The C(1)-O(3) bond length is 1.29 Å. Bi(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 distorted BiO6 octahedra that share corners with four equivalent P(1)O4 tetrahedra. The Bi(1)-O(2) bond length is 2.41 Å. The Bi(1)-O(3) bond length is 2.44 Å. The Bi(1)-O(4) bond length is 2.28 Å. The Bi(1)-O(5) bond length is 2.36 Å. The Bi(1)-O(6) bond length is 2.31 Å. The Bi(1)-O(7) bond length is 2.36 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 Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-48°. The P(1)-O(4) bond length is 1.56 Å. The P(1)-O(5) bond length is 1.56 Å. The P(1)-O(6) bond length is 1.56 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 120 degrees geometry to one K(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(1), one C(1), and one Bi(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(1), one C(1), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Bi(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a 1-coordinate geometry to one K(1), one Bi(1), and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one K(1), one Bi(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one K(1), one Bi(1), and one P(1) atom.