Reactions of the Trimethylsilyl Ion with 1,2-Cyclopentanediol Isomers in the Collision Region of a Triple Quadrupole Instrument

Article abstract of DOI:10.1002/oms.1210240409

Ion-molecule reactions with the trimethylsilyl ion were used to distinguish between cis- and trans-1,2-cyclopentanediol isomers.The ion kinetic energy of ⁺ was varied from 0 eV to 15 eV (center of mass frame of reference).At low ion kinetic energies (<4 eV), there are significant differences in the relative stabilities and decomposition behavior of the adduct ions ⁺.The cis-1,2-cyclopentanediol isomer favors decomposition of ⁺ to yield the hydrated trimethylsilyl ion ⁺ at m/z 91.For the trans isomer, the formation of the hydrated trimethylsilyl ion is an endethermic process with a definite threshold ion kinetic energy.