Materials Data on PrCuSi by Materials Project
PrCuSi crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Pr3+ is bonded to six equivalent Si4- atoms to form a mixture of edge, face, and corner-sharing PrSi6 octahedra. The corner-sharing octahedral tilt angles are 45°. All Pr–Si bond lengths are 3.16 Å. Cu1+ is bonded in a trigonal planar geometry to three equivalent Si4- atoms. All Cu–Si bond lengths are 2.44 Å. Si4- is bonded in a 9-coordinate geometry to six equivalent Pr3+ and three equivalent Cu1+ atoms.
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