aSolid-state structure of (4-OMePhFI)2Co 15a at 30% probability ellipsoids; hydrogen atoms omitted for clarity. Selected bond distances (Å) and angles (°): Co1–O2 1.8998(11), Co1–N1 2.0039(12); O1–Co1–N2 96.96(5). bX-Band EPR spectrum of compound 15a at 10 K in DMA glass. Collection parameters: microwave frequency = 9.363 GHz, power = 0.02 mW, modulation amplitude = 4 G. Simulation parameters: S = 3/2, g1 = 4.21, g2 = 1.99, g3 = 4.75, gstrain = (1.20, 0.42, 1.58).