Materials Data on MnSi2Ni by Materials Project
MnNiSi2 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. Mn4+ is bonded in a 7-coordinate geometry to seven Si4- atoms. There are a spread of Mn–Si bond distances ranging from 2.31–2.50 Å. Ni4+ is bonded in a 7-coordinate geometry to seven Si4- atoms. There are a spread of Ni–Si bond distances ranging from 2.34–2.52 Å. There are two inequivalent Si4- sites. In the first Si4- site, Si4- is bonded in a 5-coordinate geometry to three equivalent Mn4+ and four equivalent Ni4+ atoms. In the second Si4- site, Si4- is bonded in a 7-coordinate geometry to four equivalent Mn4+ and three equivalent Ni4+ atoms.
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