SEARCH · Search NASA
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
PuFe2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Pu is bonded in a 12-coordinate geometry to twelve equivalent Fe atoms. All Pu–Fe bond lengths are 2.82 Å. Fe is bonded to six equivalent Pu and six equivalent Fe atoms to form a mixture of edge, face, and corner-sharing FePu6Fe6 cuboctahedra. All Fe–Fe bond lengths are 2.41 Å.
Pu6Fe crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are two inequivalent Pu sites. In the first Pu site, Pu is bonded in a distorted T-shaped geometry to three Pu atoms. There are two shorter (2.66 Å) and one longer (2.83 Å) Pu–Pu bond lengths. In the second Pu site, Pu is bonded in a distorted rectangular see-saw-like geometry to two Pu and two equivalent Fe atoms. The Pu–Pu bond length is 2.72 Å. Both Pu–Fe bond lengths are 2.81 Å. Fe is bonded in a 10-coordinate geometry to eight equivalent Pu atoms.