Existence of Nitrosyl Ions (NO+) in Dinitrogen Tetroxide and of Nitronium Ions (NO2+) in Liquid Dinitrogen Pentoxide Angus, W. Rogie ; Jones, Richard W. ; Phillips, Glyn O. Abstract Publication: Nature Pub Date: September 1949 DOI: 10.1038/164433a0 Bibcode: 1949Natur.164..433A