Talk:Molecular ion: Difference between revisions

From Mass Spec Terms
No edit summary
No edit summary
Line 2: Line 2:
02-26-2004 02:01 PM ET (US)
02-26-2004 02:01 PM ET (US)


By far the best definition! [- the IUPAC definition - the] ASMS definition should be revised.
By far the best definition! [- the IUPAC definition - the] [[ASMS Terms and Definitions Poster|ASMS definition]] should be revised.


----
----
Line 9: Line 9:
02-26-2004 01:57 PM ET (US)
02-26-2004 01:57 PM ET (US)


[re the ASMS poster definition] The term molecular ion should be reserved to ions formed by addition or removal of an electron from the intact, neutral molecule: M+. or M-.
[re the ASMS poster definition] The term molecular ion should be reserved to ions formed by addition or removal of an electron from the intact, neutral molecule: M<sup>+.</sup> or M<sup>-.</sup>


MH+ is the protonated molecule
MH<sup>+</sup> is the [[protonated molecule]]
[M - H]- is the deprotonated molecule.
[M - H]<sup>-</sup> is the [[deprotonated molecule]].
[M + Na]+ is the Na+ adduct and so on...
[M + Na]<sup>+</sup> is the Na<sup>+</sup> adduct and so on...


Otherwise, it is a chaos since who is going to define the size limits for the "small units"
Otherwise, it is a chaos since who is going to define the size limits for the "small units"
Otherwise people will continue to use obnoxious terms such as "protonated molecular ion"
Otherwise people will continue to use obnoxious terms such as "[[protonated molecular ion]]"


----
----

Revision as of 23:20, 6 January 2005