K2P3 crystallizes in the orthorhombic Fddd space group. There are two inequivalent K sites. In the first K site, K(1) is bonded to two equivalent P(2) and six equivalent P(1) atoms to form a mixture of edge, face, and corner-sharing KP8 hexagonal bipyramids. In the second K site, K(2) is bonded in a 10-coordinate geometry to four equivalent P(2) and six equivalent P(1) atoms. There are two inequivalent P sites. In the first P site, P(2) is bonded in a 8-coordinate geometry to two equivalent K(1), four equivalent K(2), and two equivalent P(1) atoms. In the second P site, P(1) is bonded in a 8-coordinate geometry to three equivalent K(1), three equivalent K(2), one P(1), and one P(2) atom.
K2P3 crystallizes in the orthorhombic Fddd space group. There are two inequivalent K sites. In the first K site, K(1) is bonded to two equivalent P(2) and six equivalent P(1) atoms to form a mixture of edge, face, and corner-sharing KP8 hexagonal bipyramids. Both K(1)-P(2) bond lengths are 3.49 Å. There are a spread of K(1)-P(1) bond distances ranging from 3.43-3.49 Å. In the second K site, K(2) is bonded in a 10-coordinate geometry to four equivalent P(2) and six equivalent P(1) atoms. There are two shorter (3.34 Å) and two longer (3.35 Å) K(2)-P(2) bond lengths. There are a spread of K(2)-P(1) bond distances ranging from 3.31-3.40 Å. There are two inequivalent P sites. In the first P site, P(2) is bonded in a 8-coordinate geometry to two equivalent K(1), four equivalent K(2), and two equivalent P(1) atoms. Both P(2)-P(1) bond lengths are 2.15 Å. In the second P site, P(1) is bonded in a 8-coordinate geometry to three equivalent K(1), three equivalent K(2), one P(1), and one P(2) atom. The P(1)-P(1) bond length is 2.15 Å.