Materials Data on PrSi2Ni by Materials Project
PrNiSi2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Pr4+ is bonded in a 10-coordinate geometry to ten Si4- atoms. There are a spread of Pr–Si bond distances ranging from 3.12–3.20 Å. Ni4+ is bonded in a 5-coordinate geometry to five Si4- atoms. There are a spread of Ni–Si bond distances ranging from 2.32–2.37 Å. There are two inequivalent Si4- sites. In the first Si4- site, Si4- is bonded in a 8-coordinate geometry to four equivalent Pr4+ and four equivalent Ni4+ atoms. In the second Si4- site, Si4- is bonded in a 9-coordinate geometry to six equivalent Pr4+, one Ni4+, and two equivalent Si4- atoms. Both Si–Si bond lengths are 2.44 Å.
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