LaPO4 crystallizes in the orthorhombic Pnma space group. La(1) is bonded in a 9-coordinate geometry to two equivalent O(3), three equivalent O(1), and four equivalent O(2) atoms. P(1) is bonded in a tetrahedral geometry to one O(1), one O(3), and two equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to three equivalent La(1) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent La(1) and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent La(1) and one P(1) atom.
LaPO4 crystallizes in the orthorhombic Pnma space group. La(1) is bonded in a 9-coordinate geometry to two equivalent O(3), three equivalent O(1), and four equivalent O(2) atoms. There is one shorter (2.44 Å) and one longer (2.62 Å) La(1)-O(3) bond length. There is one shorter (2.60 Å) and two longer (2.83 Å) La(1)-O(1) bond lengths. There are two shorter (2.45 Å) and two longer (2.61 Å) La(1)-O(2) bond lengths. P(1) is bonded in a tetrahedral geometry to one O(1), one O(3), and two equivalent O(2) atoms. The P(1)-O(1) bond length is 1.58 Å. The P(1)-O(3) bond length is 1.55 Å. Both P(1)-O(2) bond lengths are 1.54 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to three equivalent La(1) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent La(1) and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent La(1) and one P(1) atom.