Materials Data on Np(FeGe)2 by Materials Project
Np(FeGe)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Np is bonded in a 8-coordinate geometry to eight equivalent Fe and eight equivalent Ge atoms. All Np–Fe bond lengths are 3.13 Å. All Np–Ge bond lengths are 3.09 Å. Fe is bonded to four equivalent Np and four equivalent Ge atoms to form a mixture of distorted corner, edge, and face-sharing FeNp4Ge4 tetrahedra. All Fe–Ge bond lengths are 2.32 Å. Ge is bonded in a 9-coordinate geometry to four equivalent Np, four equivalent Fe, and one Ge atom. The Ge–Ge bond length is 2.49 Å.