Question

4) Charge transfer ionization and dissociation: Suppose you were to attempt to obtain a mass spectrum of chloroethane (CH3CH2Cl) using Kr as a charge exchange (CE) chemical ionization gas. (See the NIST Webbook for the ionization energies and appearance energies). i) Determine whether chloroethane is likely to be ionized by CE with Kr. ii) Determine whether or not fragmentation by C-Cl bond cleavage is likely, giving a rational. iii) If fragmentation were to occur by simple Cl atom loss following C-Cl bond cleavage, which of the two fragments thus formed would give rise to the largest ion signal? iv) Repeat parts i and ii using Xe as the CE gas instead of Kr.

Answer 1