Unfortunately, due to the sizable second-order quadrupole broadening, and lack of spectral resolution, we cannot deconvolute these data at this time. Acquisition of the 209 Bi NMR was unsuccessful for the mixtures even after 72 hours of continuous acquisition. The large chemical shift range, sizable quadrupole broadening, possible short spin-spin (T2) relaxation or some combination thereof may inhibit detection of a signal at moderate fields. The 121 Sb and 209 Bi chemical shifts and linewidths as well as those for Li under MAS and non-spinning conditions are summarized in Table .