... See: Barltrop, JA; Coyle, J. D. "Excited States in Organic Chemistry"; Wiley: New York, 1975; pp 151-2. (12) The equations for these lines are as follows: for reduction, 1/0 = 608[Ql2 - 6.19[Q] + 13.1; for substitution, 1/0 = 3870[Ql2 + 123[Q] + 52.7. Page 3. ... J. Org. Chem., Vol. ...