... (1) (a) Chambers, J. Q. The Chemistry of the Quinonoid Compounds; Patai, S., Ed.; Wiley: 1974; Chapter 14, p 737. (b) Heimis, T.; Chowdhury, S.; Scott, SL; Kebarle, P. J. Am. ... 0002-7863/91/ 15 13-4576$02.50/0 0 1991 American Chemical Society Page 2. ... SOC., Vol. 113, No. ...