CH5N2 hydrazyl radicals, cations and dication radicals studied by mass spectrometry. Is the N-protonated formaldehyde hydrazon cation +CH2NHNH2 a bridged species?

Isomeric CH5N+2 cations, radicals and dication radicals have been studied by a variety of mass spectrometry based techniques (metastable ion-, collisional activation-, collision induced dissociative ionization-, neutralization-reionization-, charge stripping/charge separation- and charge stripping/electron-capture induced decomposition mass spectroscopy), by energetical measurements and labeling experiments. Four distinct singly charged ions …