Materials Data on SiRh2 by Materials Project
Rh2Si is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Rh sites. In the first Rh site, Rh is bonded to four equivalent Si atoms to form a mixture of distorted edge and corner-sharing RhSi4 tetrahedra. There are a spread of Rh–Si bond distances ranging from 2.42–2.47 Å. In the second Rh site, Rh is bonded in a 3-coordinate geometry to three equivalent Si atoms. There are one shorter (2.49 Å) and two longer (2.50 Å) Rh–Si bond lengths. Si is bonded in a 7-coordinate geometry to seven Rh atoms.
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