Hypothetical Three-Dimensional Metallic Compounds of C_(60) with Transition Metal Clusters

摘要

Solid C_(60) crystallizes at room temperature in a face-centered cubic (fcc) lattice, a = 14.11 A, with a shortest C-C contact of 3.10 A. The fcc lattice has tetrahedral and octahedral interstices, into which alkali and alkaline earth metal atoms enter, in the remarkable superconducting M_3C_(60) species. M = Na, K, Rb, Cs. The parent C_(60) fcc lattice expands just a little (a — 14.24 A for K_3C_(60)) in the process.