SrP3 crystallizes in the monoclinic C2/m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one P(3), four equivalent P(1), and four equivalent P(2) atoms. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one P(3), one P(4), two equivalent P(2), and four equivalent P(1) atoms. There are four inequivalent P sites. In the first P site, P(1) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one P(1), and one P(3) atom. In the second P site, P(2) is bonded in a 5-coordinate geometry to one Sr(2), two equivalent Sr(1), one P(2), and one P(4) atom. In the third P site, P(3) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), one P(4), and two equivalent P(1) atoms. In the fourth P site, P(4) is bonded in a tetrahedral geometry to one Sr(2), one P(3), and two equivalent P(2) atoms.
SrP3 crystallizes in the monoclinic C2/m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one P(3), four equivalent P(1), and four equivalent P(2) atoms. The Sr(1)-P(3) bond length is 3.20 Å. There are two shorter (3.08 Å) and two longer (3.49 Å) Sr(1)-P(1) bond lengths. There are two shorter (3.19 Å) and two longer (3.33 Å) Sr(1)-P(2) bond lengths. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one P(3), one P(4), two equivalent P(2), and four equivalent P(1) atoms. The Sr(2)-P(3) bond length is 3.42 Å. The Sr(2)-P(4) bond length is 3.30 Å. Both Sr(2)-P(2) bond lengths are 3.07 Å. There are two shorter (3.17 Å) and two longer (3.24 Å) Sr(2)-P(1) bond lengths. There are four inequivalent P sites. In the first P site, P(1) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one P(1), and one P(3) atom. The P(1)-P(1) bond length is 2.18 Å. The P(1)-P(3) bond length is 2.18 Å. In the second P site, P(2) is bonded in a 5-coordinate geometry to one Sr(2), two equivalent Sr(1), one P(2), and one P(4) atom. The P(2)-P(2) bond length is 2.23 Å. The P(2)-P(4) bond length is 2.19 Å. In the third P site, P(3) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), one P(4), and two equivalent P(1) atoms. The P(3)-P(4) bond length is 2.23 Å. In the fourth P site, P(4) is bonded in a tetrahedral geometry to one Sr(2), one P(3), and two equivalent P(2) atoms.