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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on PrCu5 by Materials Project

PrCu5 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Pr is bonded in a 6-coordinate geometry to eighteen Cu atoms. There are six shorter (2.96 Å) and twelve longer (3.29 Å) Pr–Cu bond lengths. There are two inequivalent Cu sites. In the first Cu site, Cu is bonded in a 12-coordinate geometry to three equivalent Pr and six equivalent Cu atoms. All Cu–Cu bond lengths are 2.53 Å. In the second Cu site, Cu is bonded to four equivalent Pr and eight Cu atoms to form a mixture of face, edge, and corner-sharing CuPr4Cu8 cuboctahedra. All Cu–Cu bond lengths are 2.57 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PrCu6 by Materials Project

PrCu6 is Bergman Structure: Mg32(Al,Zn)49 Bergman-derived structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Pr is bonded in a 6-coordinate geometry to nineteen Cu atoms. There are a spread of Pr–Cu bond distances ranging from 2.90–3.38 Å. There are five inequivalent Cu sites. In the first Cu site, Cu is bonded in a 2-coordinate geometry to four equivalent Pr and ten Cu atoms. There are a spread of Cu–Cu bond distances ranging from 2.53–3.10 Å. In the second Cu site, Cu is bonded to three equivalent Pr and nine Cu atoms to form a mixture of face, edge, and corner-sharing CuPr3Cu9 cuboctahedra. There are a spread of Cu–Cu bond distances ranging from 2.47–2.61 Å. In the third Cu site, Cu is bonded in a 3-coordinate geometry to three equivalent Pr and eight Cu atoms. There are two shorter (2.51 Å) and one longer (2.85 Å) Cu–Cu bond lengths. In the fourth Cu site, Cu is bonded in a 12-coordinate geometry to three equivalent Pr and nine Cu atoms. There are a spread of Cu–Cu bond distances ranging from 2.46–3.03 Å. In the fifth Cu site, Cu is bonded to three equivalent Pr and nine Cu atoms to form a mixture of face, edge, and corner-sharing CuPr3Cu9 cuboctahedra. There are one shorter (2.49 Å) and one longer (2.60 Å) Cu–Cu bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PrCu6 by Materials Project

PrCu6 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Pr is bonded in a 6-coordinate geometry to nineteen Cu atoms. There are a spread of Pr–Cu bond distances ranging from 2.89–3.40 Å. There are six inequivalent Cu sites. In the first Cu site, Cu is bonded in a 12-coordinate geometry to three equivalent Pr and nine Cu atoms. There are a spread of Cu–Cu bond distances ranging from 2.45–3.06 Å. In the second Cu site, Cu is bonded to three equivalent Pr and nine Cu atoms to form a mixture of distorted corner, edge, and face-sharing CuPr3Cu9 cuboctahedra. There are a spread of Cu–Cu bond distances ranging from 2.48–2.69 Å. In the third Cu site, Cu is bonded in a 2-coordinate geometry to four equivalent Pr and ten Cu atoms. There are a spread of Cu–Cu bond distances ranging from 2.53–3.25 Å. In the fourth Cu site, Cu is bonded to three equivalent Pr and nine Cu atoms to form a mixture of distorted corner, edge, and face-sharing CuPr3Cu9 cuboctahedra. There are a spread of Cu–Cu bond distances ranging from 2.45–2.62 Å. In the fifth Cu site, Cu is bonded in a 12-coordinate geometry to three equivalent Pr and nine Cu atoms. There are one shorter (2.56 Å) and one longer (3.22 Å) Cu–Cu bond lengths. In the sixth Cu site, Cu is bonded to three equivalent Pr and nine Cu atoms to form a mixture of corner, edge, and face-sharing CuPr3Cu9 cuboctahedra.

36 MATERIALS SCIENCE↗