Fig. 5: UV/Vis/NIR spectroscopic data for uranium(IV)-imido (3Li/Cs) and uranium(V)-nitrides (5Li/Cs) complexes.
From: Evidence for ligand- and solvent-induced disproportionation of uranium(IV)

a ε (M−1 cm−1) vs energy (cm−1) of 3Li (red trace) and 3Cs (blue trace) in toluene. b ε (M−1 cm−1) vs energy (cm−1) of 5Li (red trace) and 5Cs (blue trace) in toluene.