Protonated molecule: Difference between revisions

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An ion formed by interaction of a neutral molecule with a proton, and represented by the symbolism [M + H]<sup>+</sup>. The  term 'protonated molecular ion' is not recommended as it suggests a different species formed by the association of a proton with a molecular ion. Likewise, the ambigous terms 'quasi-molecular ion' or 'pseudo-molecular ion' should be avoided.
 


== [[Orange Book]] Entry ==
== [[Orange Book]] Entry ==


An ion formed by interaction of a molecule with a proton abstracted from an ion, as often happens in [[Chemical Ionization]] according to the reaction M + XH<sup>+</sup>  &rarr; MH<sup>+</sup> + X. The symbolism [M+H]<sup>+</sup> may also be used. The widely used term '[[Protonated Molecular Ion]]' is not recommended as it suggests an association product of a proton with a molecular ion.


== Related Terms ==
== Related Terms ==


[[Quasi-Molecular Ion]]
[[Molecular Ion]]


[[Category:Ions]]
[[Category:Ions]]

Revision as of 14:22, 4 February 2005

An ion formed by interaction of a neutral molecule with a proton, and represented by the symbolism [M + H]+. The term 'protonated molecular ion' is not recommended as it suggests a different species formed by the association of a proton with a molecular ion. Likewise, the ambigous terms 'quasi-molecular ion' or 'pseudo-molecular ion' should be avoided.


Orange Book Entry

Related Terms

Molecular Ion