Determination of the structural features of O-alkyl-S-2-(N,N-dialkylamino) ethyl alkylthiophosphonates from their electron ionization mass spectra

It is believed that information about the molecular structure of highly toxic O-alkyl-S-2(N,N-dialkylamino) ethyl alkylthiophosphonates (V-gases) obtained from their EI mass spectra is too insufficient. In particular, the determination of molecular weights and structures of radicals at phosphorus and oxygen atoms causes great difficulties. In this paper, solutions of these problems are proposed.