Materials Data on HoP5 by Materials Project
HoP5 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. Ho3+ is bonded in a 8-coordinate geometry to eight P+0.60- atoms. There are a spread of Ho–P bond distances ranging from 2.92–3.01 Å. There are three inequivalent P+0.60- sites. In the first P+0.60- site, P+0.60- is bonded to two equivalent Ho3+ and two P+0.60- atoms to form a mixture of corner and edge-sharing PHo2P2 tetrahedra. There are one shorter (2.17 Å) and one longer (2.22 Å) P–P bond lengths. In the second P+0.60- site, P+0.60- is bonded to two equivalent Ho3+ and two equivalent P+0.60- atoms to form distorted corner-sharing PHo2P2 tetrahedra. Both P–P bond lengths are 2.22 Å. In the third P+0.60- site, P+0.60- is bonded to one Ho3+ and three P+0.60- atoms to form distorted PHoP3 tetrahedra that share corners with nine PHo2P2 tetrahedra and an edgeedge with one PHoP3 tetrahedra. The P–P bond length is 2.20 Å.