X-band EPR spectra of compounds 11a, 11b, and 11d recorded in DMA glass at 8 K. Black = experimental; red = simulated. Collection parameters for 11a: microwave frequency = 9.363 GHz, power = 2.0 mW, modulation amplitude = 4 G. Collection parameters for 11b: microwave frequency = 9.364 GHz, power = 0.06 mW, modulation amplitude = 4 G. Collection parameters for 11d: microwave frequency = 9.367 GHz, power = 0.6 mW, modulation amplitude = 4 G.