Materials Data on Na3Au by Materials Project

Abstract

Na3Au is alpha bismuth trifluoride structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Na sites. In the first Na site, Na is bonded to four equivalent Na and four equivalent Au atoms to form distorted NaNa4Au4 tetrahedra that share corners with eight equivalent NaNa8Au4 cuboctahedra, corners with eight equivalent NaNa4Au4 tetrahedra, edges with four equivalent NaNa8Au4 cuboctahedra, edges with twelve equivalent NaNa4Au4 tetrahedra, and faces with six equivalent NaNa4Au4 tetrahedra. All Na–Na bond lengths are 3.19 Å. All Na–Au bond lengths are 3.19 Å. In the second Na site, Na is bonded to eight equivalent Na and four equivalent Au atoms to form NaNa8Au4 cuboctahedra that share corners with four equivalent NaNa8Au4 cuboctahedra, corners with sixteen equivalent NaNa4Au4 tetrahedra, edges with eight equivalent NaNa8Au4 cuboctahedra, edges with eight equivalent NaNa4Au4 tetrahedra, and faces with four equivalent NaNa8Au4 cuboctahedra. All Na–Au bond lengths are 3.61 Å. Au is bonded in a distorted body-centered cubic geometry to twelve Na atoms.