Materials Data on LaSi3Rh by Materials Project
LaRhSi3 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. La is bonded in a 12-coordinate geometry to five equivalent Rh and twelve Si atoms. There are four shorter (3.39 Å) and one longer (3.42 Å) La–Rh bond lengths. There are a spread of La–Si bond distances ranging from 3.14–3.37 Å. Rh is bonded in a 5-coordinate geometry to five equivalent La and five Si atoms. All Rh–Si bond lengths are 2.39 Å. There are two inequivalent Si sites. In the first Si site, Si is bonded in a distorted single-bond geometry to four equivalent La, one Rh, and four equivalent Si atoms. All Si–Si bond lengths are 2.61 Å. In the second Si site, Si is bonded in a distorted bent 120 degrees geometry to four equivalent La, two equivalent Rh, and two equivalent Si atoms.