Photo of air-tight PP-covered Kapton windows used for XRD, additional diffraction patterns related to Sb-Bi and Li-Sb-Bi alloy synthesis. Sb NMR spectrum of Li2Sb compound and static variable temperature Li NMR spectra of all compounds. Tables with chemical shifts and line widths for MAS and static Li, 121 Sb and Bi NMR spectra at room temperature and Li at variable temperature. Table . Summary of Li MAS NMR and non-spinning Li, 121 Sb and 209 Bi (non-spinning) NMR results for lithium alloyed compounds (B0 = 11.7 T, T= 293 K).