K(PO4)2 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom. There are two inequivalent P sites. In the first P site, P(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second P site, P(2) is bonded in a tetrahedral geometry to one O(5), one O(6), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(6) is bonded in a distorted single-bond geometry to one K(1) and one P(2) atom. In the second O site, O(7) is bonded in a distorted single-bond geometry to one K(1) and one P(2) atom. In the third O site, O(8) is bonded in a single-bond geometry to one P(2) atom. In the fourth O site, O(1) is bonded in a single-bond geometry to one K(1) and one P(1) atom. In the fifth O site, O(2) is bonded in a distorted single-bond geometry to one K(1) and one P(1) atom. In the sixth O site, O(3) is bonded in a distorted single-bond geometry to one K(1) and one P(1) atom. In the seventh O site, O(4) is bonded in a single-bond geometry to one K(1) and one P(1) atom. In the eighth O site, O(5) is bonded in a distorted single-bond geometry to one K(1) and one P(2) atom.
K(PO4)2 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom. The K(1)-O(1) bond length is 3.10 Å. The K(1)-O(2) bond length is 2.80 Å. The K(1)-O(3) bond length is 2.86 Å. The K(1)-O(4) bond length is 3.21 Å. The K(1)-O(5) bond length is 3.00 Å. The K(1)-O(6) bond length is 2.96 Å. The K(1)-O(7) bond length is 2.79 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. The P(1)-O(1) bond length is 1.54 Å. The P(1)-O(2) bond length is 1.54 Å. The P(1)-O(3) bond length is 1.54 Å. The P(1)-O(4) bond length is 1.55 Å. In the second P site, P(2) is bonded in a tetrahedral geometry to one O(5), one O(6), one O(7), and one O(8) atom. The P(2)-O(5) bond length is 1.55 Å. The P(2)-O(6) bond length is 1.54 Å. The P(2)-O(7) bond length is 1.54 Å. The P(2)-O(8) bond length is 1.54 Å. There are eight inequivalent O sites. In the first O site, O(6) is bonded in a distorted single-bond geometry to one K(1) and one P(2) atom. In the second O site, O(7) is bonded in a distorted single-bond geometry to one K(1) and one P(2) atom. In the third O site, O(8) is bonded in a single-bond geometry to one P(2) atom. In the fourth O site, O(1) is bonded in a single-bond geometry to one K(1) and one P(1) atom. In the fifth O site, O(2) is bonded in a distorted single-bond geometry to one K(1) and one P(1) atom. In the sixth O site, O(3) is bonded in a distorted single-bond geometry to one K(1) and one P(1) atom. In the seventh O site, O(4) is bonded in a single-bond geometry to one K(1) and one P(1) atom. In the eighth O site, O(5) is bonded in a distorted single-bond geometry to one K(1) and one P(2) atom.