J. Rahmer et al., Anisotropic electronic structure of orthorhombic RbC60: A high-field ESR investigation - art. no. 081108, PHYS REV B, 6308(8), 2001, pp. 1108
The full anisotropy of the electronic g tensor of a RbC60 single crystal wa
s determined by applying high-field ESR. The principal values of the g tens
or g(xx) = 2.0014, g(yy) = 2.0012, and g(zz) = 2.0019 reflect the orthorhom
bic symmetry and 3D nature of this polymeric phase.