7. 8π-Six-atom rings: 1,3,4,5-oxa- and -thia-triazines and 1,2,3,5-tetrazines from an extended tandem reaction: reactions of 1,2,3-triazolium-1-imides with (E)-cinnamaldehyde, methyl cyanodithioformate, and aryl-N-sulphinylamines: new tetrahydro-oxazolo[4,5-d]-1,2,3-triazoliumides and triazaspiro-[4.4]nonanes. Azolium 1,3-dipoles. Part 4 Richard N. Butler,Ann M. Evans,Eithne M. McNeela,Gerard A. O'Halloran,Paul D. O'Shea,Desmond Cunningham,Patrick McArdle J. Chem. Soc. Perkin Trans. 1 1990 2527
8. Molecular energy levels of azines; ab initio calculations and correlation with photoelectron spectroscopy Michael H. Palmer,A. J. Gaskell,R. H. Findlay J. Chem. Soc. Perkin Trans. 2 1974 778
9. Molecular energy levels of azines; ab initio calculations and correlation with photoelectron spectroscopy Michael H. Palmer,A. J. Gaskell,R. H. Findlay J. Chem. Soc. Perkin Trans. 2 1974 778