Michael K. Hoffman

Dehydration of the protonated butane-2,3-dione–ethanol ion [(CH3CO·-CO·CH3)(C2H5OH)H+] in the gaseous phase

Among the ions present in the ion cyclotron resonance spectrum of a mixture of butane-2,3-dione and ethanol at low ionizing voltage is a species of m/e 115 which is shown by deuterium labelling to correspond to a product of dehydration of the mixed-solvate (CH3COCOCH3)(C2H5OH)H+ in which both hydrogen atoms lost originate from the hydroxy-group of ethanol.

Structural characteristics of non-decomposing C7H7+ ions from some methyl ethers on electron impact

The structures of C7H7+ ions formed from different precursors have been examined by means of a simplified form of the quasi-equilibrium theory.

Ion cyclotron resonance study of the mechanism of the loss of C3H6 from the molecular ion of n-butylbenzene

The C7H8+˙ ions from n-butylbenzene differ in reactivity from those of toluene, most likely because of differing structure.