Alkene loss from metastable methyleneimmonium ions: Unusual inverse secondary isotope effect in ion??neutral complex intermediate fragmentations

HJ Veith, JH Gross

Index: Veith, Hans J.; Gross, Juergen H. Organic Mass Spectrometry, 1991 , vol. 26, # 12 p. 1097 - 1108

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Citation Number: 24

Abstract

Abstract The mechanism of propene elimination from metastable methyleneimmonium ions is discussed. The first field-free region fragmentations of complete sets of isotopically labelled methyleneimmonium ions (H 2 C= equation image+ R 1 R 2: R 1= R 2= nC 3 H 7; R 1= R 2= iC 3 H 7; R 1= nC 3 H 7; R 2= C 2 H 5; R 1= nC 3 H 7; R 2= CH 3; R 1= nC 3 H 7; R 2= H) were used to support the mechanism presented. The relative amounts of H/D ...