Page 1. Aust. J. Chem., 1981, 34, 163-70 A Search for Lone-Pair Interactions in Forward and Reverse Menschutkin Reactions of Some Diaza Heterocycles ... J. Chem., 1979, 32, 1735. Albert, A., in 'Physical Methods in Heterocyclic Chemistry' (Ed. AR Katritzky) Vol. ...