Materials Data on Th3Si2 by Materials Project
Th3Si2 crystallizes in the tetragonal P4/mbm space group. The structure is three-dimensional. there are two inequivalent Th sites. In the first Th site, Th is bonded in a 1-coordinate geometry to four equivalent Th and three equivalent Si atoms. All Th–Th bond lengths are 3.78 Å. There are one shorter (2.77 Å) and two longer (2.97 Å) Th–Si bond lengths. In the second Th site, Th is bonded in a distorted q6 geometry to ten Th atoms. Both Th–Th bond lengths are 3.41 Å. Si is bonded in a 4-coordinate geometry to three equivalent Th and one Si atom. The Si–Si bond length is 2.26 Å.
36 MATERIALS SCIENCE↗