P3Se4I is Indium-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four P3Se4I clusters. There are three inequivalent P sites. In the first P site, P(1) is bonded in a trigonal non-coplanar geometry to one Se(1), one Se(2), and one Se(4) atom. In the second P site, P(2) is bonded in a distorted trigonal non-coplanar geometry to one P(3), one Se(2), and one I(1) atom. In the third P site, P(3) is bonded in a distorted trigonal non-coplanar geometry to one P(2), one Se(1), and one Se(3) atom. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in an L-shaped geometry to one P(1) and one P(3) atom. In the second Se site, Se(2) is bonded in a water-like geometry to one P(1) and one P(2) atom. In the third Se site, Se(3) is bonded in a distorted water-like geometry to one P(3) and one Se(4) atom. In the fourth Se site, Se(4) is bonded in a distorted water-like geometry to one P(1) and one Se(3) atom. I(1) is bonded in a single-bond geometry to one P(2) atom.
P3Se4I is Indium-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four P3Se4I clusters. There are three inequivalent P sites. In the first P site, P(1) is bonded in a trigonal non-coplanar geometry to one Se(1), one Se(2), and one Se(4) atom. The P(1)-Se(1) bond length is 2.27 Å. The P(1)-Se(2) bond length is 2.28 Å. The P(1)-Se(4) bond length is 2.22 Å. In the second P site, P(2) is bonded in a distorted trigonal non-coplanar geometry to one P(3), one Se(2), and one I(1) atom. The P(2)-P(3) bond length is 2.19 Å. The P(2)-Se(2) bond length is 2.26 Å. The P(2)-I(1) bond length is 2.52 Å. In the third P site, P(3) is bonded in a distorted trigonal non-coplanar geometry to one P(2), one Se(1), and one Se(3) atom. The P(3)-Se(1) bond length is 2.24 Å. The P(3)-Se(3) bond length is 2.26 Å. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in an L-shaped geometry to one P(1) and one P(3) atom. In the second Se site, Se(2) is bonded in a water-like geometry to one P(1) and one P(2) atom. In the third Se site, Se(3) is bonded in a distorted water-like geometry to one P(3) and one Se(4) atom. The Se(3)-Se(4) bond length is 2.41 Å. In the fourth Se site, Se(4) is bonded in a distorted water-like geometry to one P(1) and one Se(3) atom. I(1) is bonded in a single-bond geometry to one P(2) atom.