Evidence for existence of nondegenerate delocalized electrons in A1C60 at high temperatures

Electronic properties of rocksalt A1C60 are explained in terms of the existence of nondegenerate delocalized electrons. Magnetic susceptibility and Knight shift are proportional to inverse temperature. The semiconducting temperature dependence of d.c. resistivity may be dominated by the grain boundaries. The calculated magnetic susceptibility is compared with experimental data for high temperature phase Rb1C60.