An ion formed by interaction of a molecule with a
proton abstracted from an ion, as often occurs in chemical
ionization according to the reaction:
.
The symbolism
[M + H]+
may also be used to represent the protonated molecule. The widely used term '
protonated molecular ion' to describe the
MH+
ion is not recommended, since it suggests an associated product of a
proton with a molecular ion.
Source:
PAC, 1991, 63, 1541
(Recommendations for nomenclature and symbolism for mass spectroscopy (including an
appendix of terms used in vacuum technology). (Recommendations 1991))
on page 1550
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
https://doi.org/10.1351/goldbook.
