Materials Data on PrCu4Pd by Materials Project

PrCu4Pd crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Pr is bonded in a distorted hexagonal planar geometry to three equivalent Pd and fifteen Cu atoms. All Pr–Pd bond lengths are 2.99 Å. There are three shorter (2.99 Å) and twelve longer (3.35 Å) Pr–Cu bond lengths. Pd is bonded to three equivalent Pr and nine Cu atoms to form distorted PdPr3Cu9 cuboctahedra that share corners with twenty-one CuPr3Cu6Pd3 cuboctahedra, edges with six equivalent PdPr3Cu9 cuboctahedra, faces with two equivalent PdPr3Cu9 cuboctahedra, and faces with twenty-one CuPr3Cu6Pd3 cuboctahedra. There are six shorter (2.61 Å) and three longer (2.99 Å) Pd–Cu bond lengths. There are two inequivalent Cu sites. In the first Cu site, Cu is bonded to three equivalent Pr, three equivalent Pd, and six equivalent Cu atoms to form CuPr3Cu6Pd3 cuboctahedra that share corners with nine equivalent PdPr3Cu9 cuboctahedra, corners with twelve equivalent CuPr4Cu6Pd2 cuboctahedra, edges with six equivalent CuPr3Cu6Pd3 cuboctahedra, faces with three equivalent PdPr3Cu9 cuboctahedra, and faces with twenty CuPr3Cu6Pd3 cuboctahedra. All Cu–Cu bond lengths are 2.57 Å. In the second Cu site, Cu is bonded to four equivalent Pr, two equivalent Pd, and six Cu atoms to form distorted CuPr4Cu6Pd2 cuboctahedra that share corners with four equivalent PdPr3Cu9 cuboctahedra, corners with twenty CuPr3Cu6Pd3 cuboctahedra, edges with ten equivalent CuPr4Cu6Pd2 cuboctahedra, faces with six equivalent PdPr3Cu9 cuboctahedra, and faces with sixteen CuPr3Cu6Pd3 cuboctahedra. There are two shorter (2.53 Å) and two longer (2.65 Å) Cu–Cu bond lengths.