Electron impact studies. XCVII. Acetic anhydride[α,α'-D2]. Synthesis and negative ion molecule reactions. An ion cyclotron resonance study

Abstract

Acetic anhydride[α,α?-D2] has been synthesized in near-quantitative yield by the reaction between acetic acid[α-D] and dicyclohexylcarbodiimide. The gas-phase reaction between the acetate anion and acetic anhydride[α,α-D2] yields a 1 : 1 adduct which decomposes by loss of CH2CO and CHDCO so that kH/kD is 1.2 when the ion- transit time is 10-3-10-4 s, and 2.0 at 10-1-10-2 s.