Materials Data on Cu31PdN8 by Materials Project

Abstract

PdCu31N8 crystallizes in the orthorhombic Pmmm space group. The structure is three-dimensional. Pd is bonded in a linear geometry to four equivalent Cu and two equivalent N atoms. All Pd–Cu bond lengths are 2.72 Å. Both Pd–N bond lengths are 1.97 Å. There are fourteen inequivalent Cu sites. In the first Cu site, Cu is bonded to one Pd and eleven Cu atoms to form distorted CuCu11Pd cuboctahedra that share corners with twelve CuCu11Pd cuboctahedra, faces with six CuCu11Pd cuboctahedra, and faces with eight NCu6 octahedra. There are a spread of Cu–Cu bond distances ranging from 2.69–2.76 Å. In the second Cu site, Cu is bonded to twelve Cu atoms to form CuCu12 cuboctahedra that share corners with twelve CuCu11Pd cuboctahedra, faces with six CuCu11Pd cuboctahedra, and faces with eight NCu6 octahedra. There are a spread of Cu–Cu bond distances ranging from 2.70–2.76 Å. In the third Cu site, Cu is bonded in a linear geometry to four equivalent Cu and two N atoms. Both Cu–N bond lengths are 1.90 Å. In the fourth Cu site, Cu is bonded in a linear geometry to four equivalent Cu and two N atoms. Both Cu–N bond lengths are 1.90 Å. In the fifth Cu site, Cu is bonded in a linear geometry to four Cu and two N atoms. Both Cu–N bond lengths are 1.93 Å. In the sixth Cu site, Cu is bonded in a linear geometry to four equivalent Cu and two N atoms. There is one shorter (1.89 Å) and one longer (1.91 Å) Cu–N bond length. In the seventh Cu site, Cu is bonded in a linear geometry to four equivalent Cu and two N atoms. Both Cu–N bond lengths are 1.90 Å. In the eighth Cu site, Cu is bonded in a linear geometry to four equivalent Cu and two N atoms. There is one shorter (1.92 Å) and one longer (1.94 Å) Cu–N bond length. In the ninth Cu site, Cu is bonded in a linear geometry to four equivalent Cu and two N atoms. Both Cu–N bond lengths are 1.93 Å. In the tenth Cu site, Cu is bonded in a linear geometry to four Cu and two equivalent N atoms. Both Cu–N bond lengths are 1.97 Å. In the eleventh Cu site, Cu is bonded in a linear geometry to four equivalent Cu and two equivalent N atoms. Both Cu–N bond lengths are 1.97 Å. In the twelfth Cu site, Cu is bonded in a linear geometry to four equivalent Cu and two equivalent N atoms. Both Cu–N bond lengths are 1.97 Å. In the thirteenth Cu site, Cu is bonded in a linear geometry to four Cu and two equivalent N atoms. Both Cu–N bond lengths are 1.97 Å. In the fourteenth Cu site, Cu is bonded in a linear geometry to four equivalent Cu and two equivalent N atoms. Both Cu–N bond lengths are 1.97 Å. There are six inequivalent N sites. In the first N site, N is bonded to two equivalent Pd and four Cu atoms to form NCu4Pd2 octahedra that share corners with six NCu4Pd2 octahedra and faces with eight equivalent CuCu11Pd cuboctahedra. The corner-sharing octahedral tilt angles are 0°. In the second N site, N is bonded to six Cu atoms to form NCu6 octahedra that share corners with six NCu6 octahedra and faces with eight equivalent CuCu12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. In the third N site, N is bonded to six Cu atoms to form NCu6 octahedra that share corners with six NCu4Pd2 octahedra and faces with eight equivalent CuCu11Pd cuboctahedra. The corner-sharing octahedral tilt angles are 0°. In the fourth N site, N is bonded to six Cu atoms to form NCu6 octahedra that share corners with six NCu6 octahedra and faces with eight equivalent CuCu12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. In the fifth N site, N is bonded to six Cu atoms to form NCu6 octahedra that share corners with six NCu4Pd2 octahedra and faces with eight CuCu11Pd cuboctahedra. The corner-sharing octahedral tilt angles are 0°. In the sixth N site, N is bonded to six Cu atoms to form NCu6 octahedra that share corners with six NCu6 octahedra and faces with eight CuCu11Pd cuboctahedra. The corner-sharing octahedral tilt angles are 0°.