Figure 6
X-band EPR spectra of DAD. (a) 4000 G field sweep (an asterisk indicates trace Cu2+ contamination). (b) A sweep showing the region from 500 to 2100 G, with g values for major lines indicated. (c) DAD with a fivefold molar excess of substrate 2,4′-DHAP added, with g values for major lines indicated; vertical and horizontal scales are as in (b). Experimental parameters: microwave power 0.5 mW, modulation amplitude 5 G, modulation frequency 100 kHz, temperature 10 K; (b) and (c) are the result of four co-added scans. |