NpAu3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. Np(1) is bonded in a distorted body-centered cubic geometry to six equivalent Au(2) and eight equivalent Au(1) atoms. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded to four equivalent Np(1) and four equivalent Au(2) atoms to form a mixture of distorted corner, edge, and face-sharing AuNp4Au4 tetrahedra. In the second Au site, Au(2) is bonded in a 14-coordinate geometry to six equivalent Np(1) and eight equivalent Au(1) atoms.
NpAu3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. Np(1) is bonded in a distorted body-centered cubic geometry to six equivalent Au(2) and eight equivalent Au(1) atoms. All Np(1)-Au(2) bond lengths are 3.48 Å. All Np(1)-Au(1) bond lengths are 3.01 Å. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded to four equivalent Np(1) and four equivalent Au(2) atoms to form a mixture of distorted corner, edge, and face-sharing AuNp4Au4 tetrahedra. All Au(1)-Au(2) bond lengths are 3.01 Å. In the second Au site, Au(2) is bonded in a 14-coordinate geometry to six equivalent Np(1) and eight equivalent Au(1) atoms.