SYSTEMATIC SERIES OF AZACYCL[333]AZINES OF VARYING NITROGEN-CONTENT -N-15 MAGNETIC-RESONANCE SPECTRA

Nitrogen-15 NMR spectra were obtained for a systematic series of azacy cl[3.3.3]azines: ,7,9-hexaza,1,3,4,6,7-pentaaza-,1,3,4,6-tetraaza-, 1, 3,4,6,8-pentaaza-, and 1,3,6-triazacycl[3.3.3]azine. The magnetic reso nance data were compared with other physical and spectroscopic propert ies available for the series relative to the diminishing number of per ipheral nitrogens in alternating positions. The properties of 1,3,4,6, 8-pentaazacycl[3.3.3]azine, which has a peripheral 1,4-diazine-type ni trogen, are distinct from those of the rest of the series.