ELECTRON IONIZATION AND FAST-ATOM-BOMBARDMENT MASS-SPECTROMETRY OF SOME NEW MACROCYCLES CONTAINING TRIETHANOLAMINE DERIVATIVES AND 1,3,5-TRIAZINE MOIETIES

The behaviour of four open-chain analogues of crown ethers (polypodand s) have been studied under both electron ionization and fast-atom bomb ardment conditions with the aid of mass-analyzed ion kinetic energy sp ectroscopy and accurate mass measurements. In electron ionization, ext ensive fragmentations, closely related to the original structures, are observed, while fast-atom bombardment, leading to the formation of ab undant protonated molecules, allows easy establishment of the molecula r weight. The presence of odd-electron cations in distonic form and th e occurrence of cyclization reactions are discussed.