7.

X-band CW EPR spectra for the three anions in 2-methyltetrahydrofuran solution (293 K) show varying degrees of resolved superhyperfine coupling. An intricate splitting pattern is seen in [1]•–, no coupling is resolved in [2]•–, and partially resolved splitting patterns in [3]•–. Fitting in EasySpin provided the A values shown for [1]•–. The assignments of A values to positions in [1]•– were made by comparison with DFT calculations (PBE0/EPR-III). ,,