Conformational analysis of saturated heterocycles. Part 94. Applications of photoelectron spectroscopy to molecular properties. Part 3. Photoelectron spectroscopic studies of some 1-oxa-3,4-diaza-, 1-thia-3,4-diaza-, 1,2,4-triaza-, and 1,2,4,5-tetra-aza-cyclohexanes

Abstract

2-Oxa-4a,8a-diazadecalin (2) shows bands of the predominant αα and a minor εα form. 1,2,4-Trimethyl-1,2,4-triaza-(3) and 3,4-dimethyl-1-thia-3,4-diaza-cyclohexane (4) probably exist in the αεα and εα conformations, respectively. These conclusions are in good agreement with those from solution measurements, as are those for four 1,2,4,5-tetra-azacyclohexanes.