SEARCH · Engineering Papers
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.
RbK2Bi crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two RbK2Bi ribbons oriented in the (0, 1, 0) direction. Rb is bonded in a linear geometry to two equivalent K atoms. Both Rb–K bond lengths are 4.30 Å. K is bonded in a single-bond geometry to one Rb and one Bi atom. The K–Bi bond length is 3.44 Å. Bi is bonded in a linear geometry to two equivalent K atoms.
RbK2Bi is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Rb is bonded in a 8-coordinate geometry to eight equivalent K and six equivalent Bi atoms. All Rb–K bond lengths are 3.82 Å. All Rb–Bi bond lengths are 4.41 Å. K is bonded to four equivalent Rb and four equivalent Bi atoms to form a mixture of distorted face, edge, and corner-sharing KRb4Bi4 tetrahedra. All K–Bi bond lengths are 3.82 Å. Bi is bonded in a body-centered cubic geometry to six equivalent Rb and eight equivalent K atoms.