Materials Data on Sr2P6Rh7 by Materials Project
Sr2Rh7P6 crystallizes in the tetragonal P-42_1m space group. The structure is three-dimensional. Sr is bonded in a 10-coordinate geometry to ten Rh and eight P atoms. There are a spread of Sr–Rh bond distances ranging from 3.32–3.64 Å. There are a spread of Sr–P bond distances ranging from 3.26–3.55 Å. There are three inequivalent Rh sites. In the first Rh site, Rh is bonded in a distorted tetrahedral geometry to four equivalent Rh and four equivalent P atoms. All Rh–Rh bond lengths are 2.74 Å. All Rh–P bond lengths are 2.30 Å. In the second Rh site, Rh is bonded in a 4-coordinate geometry to four equivalent Sr, four equivalent Rh, and four P atoms. There are two shorter (2.76 Å) and two longer (2.87 Å) Rh–Rh bond lengths. There are a spread of Rh–P bond distances ranging from 2.34–2.46 Å. In the third Rh site, Rh is bonded in a 4-coordinate geometry to three equivalent Sr, three Rh, and four P atoms. There are a spread of Rh–P bond distances ranging from 2.30–2.52 Å. There are two inequivalent P sites. In the first P site, P is bonded in a 9-coordinate geometry to four equivalent Sr, four Rh, and one P atom. The P–P bond length is 2.29 Å. In the second P site, P is bonded in a 7-coordinate geometry to two equivalent Sr and five Rh atoms.