Eu5P3O13 crystallizes in the hexagonal P6_3/m space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 9-coordinate geometry to three equivalent O(1), three equivalent O(3), and three equivalent O(4) atoms. In the second Eu site, Eu(2) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), and four equivalent O(4) atoms. P(1) is bonded in a tetrahedral geometry to one O(1), one O(3), and two equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Eu(2), two equivalent Eu(1), and one P(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to three equivalent Eu(2) atoms. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Eu(2), two equivalent Eu(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Eu(1), two equivalent Eu(2), and one P(1) atom.
Eu5P3O13 crystallizes in the hexagonal P6_3/m space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 9-coordinate geometry to three equivalent O(1), three equivalent O(3), and three equivalent O(4) atoms. All Eu(1)-O(1) bond lengths are 2.56 Å. All Eu(1)-O(3) bond lengths are 2.57 Å. All Eu(1)-O(4) bond lengths are 2.90 Å. In the second Eu site, Eu(2) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), and four equivalent O(4) atoms. The Eu(2)-O(1) bond length is 2.82 Å. The Eu(2)-O(2) bond length is 2.25 Å. The Eu(2)-O(3) bond length is 2.62 Å. There are two shorter (2.57 Å) and two longer (2.62 Å) Eu(2)-O(4) bond lengths. P(1) is bonded in a tetrahedral geometry to one O(1), one O(3), and two equivalent O(4) atoms. The P(1)-O(1) bond length is 1.55 Å. The P(1)-O(3) bond length is 1.56 Å. Both P(1)-O(4) bond lengths are 1.56 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Eu(2), two equivalent Eu(1), and one P(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to three equivalent Eu(2) atoms. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Eu(2), two equivalent Eu(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Eu(1), two equivalent Eu(2), and one P(1) atom.