EPR spectra of intermediate I (l(N2H4)) detected by various techniques. Conditions for CW X-band: microwave frequency, 9.38 GHz; microwave power, 10 mW; modulation amplitude, 7 G; time constant, 160 ms; field sweep speed, 20 G/s. Conditions for CW Q-band: microwave frequency, 35.08 GHz; microwave power, 32 μW; modulation amplitude 4 G; time constant, 128 ms; field sweep speed, 17 G/s. Conditions for pulsed Q-band: microwave frequency, 34.79 GHz; Mims sequence, π/2 = 50 ns, τ = 600 ns; repetition time 10 ms, 50 shots/point; field sweep speed, 8 G/s.