Protonated molecule: Difference between revisions
No edit summary |
No edit summary |
||
| Line 5: | Line 5: | ||
[[Adduct ion]], represented by [M + H]<sup>+</sup>, formed by the interaction of a molecule with a [[proton]] | [[Adduct ion]], represented by [M + H]<sup>+</sup>, formed by the interaction of a molecule with a [[proton]] | ||
([[hydron]]). | ([[hydron]]). | ||
:Note 1: Multiply protonated | :Note 1: [[Multiply protonated molecule]]s are represented by [M + nH]<sup>n+</sup> where n is the number of protons. | ||
:Note 2: Protonated molecular ion is deprecated; for example, for a [[molecular ion]] M<sup>+</sup> this would correspond to a species carrying two positive charges plus an unpaired electron. | :Note 2: Protonated molecular ion is deprecated; for example, for a [[molecular ion]] M<sup>+</sup> this would correspond to a species carrying two positive charges plus an unpaired electron. | ||
:Note 3: Pseudo-molecular ion and quasi-molecular ion are deprecated; a specific term such as protonated molecule, or a chemical description such as [M + H]<sup>+</sup> should be used. | :Note 3: Pseudo-molecular ion and quasi-molecular ion are deprecated; a specific term such as protonated molecule, or a chemical description such as [M + H]<sup>+</sup> should be used. | ||
Revision as of 14:46, 31 March 2014
| IUPAC RECOMMENDATIONS 2013 |
| Protonated molecule |
|---|
| Deprecated: protonated molecular ion, pseudo-molecular ion, quasi-molecular ion.
Adduct ion, represented by [M + H]+, formed by the interaction of a molecule with a proton (hydron).
|
| Related Term(s): adduct ion |
| Reference(s):
IUPAC. Analytical Division. Compendium of Analytical Nomenclature (the Orange Book). Definitive Rules, 1979. Compiled by J. Inczdy, T. Lengyel, A. M. Ure. Blackwell Scientific Publications, Oxford (1997). On-line corrected version: http://www.iupac.org /publications/analytical compendium (2000). 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. M. Bursey. Mass Spectrom. Rev. 10, 1 (1991). (http://dx.doi.org/10.1002/mas.1280100102 ) |
| From Definitions of Terms Relating to Mass Spectrometry (IUPAC Recommendations 2013); DOI: 10.1351/PAC-REC-06-04-06 © IUPAC 2013. |
Orange Book
| ORANGE BOOK DEFINITION
IUPAC. Analytical Division. Compendium of Analytical Nomenclature (the Orange Book). Definitive Rules, 1979 (see also Orange Book 2023) |
| Protonated molecule |
|---|
|
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+ ? MH+ + X. The symbolism (M+H)+ 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. |
| IUPAC 1997 Orange Book Chapter 12 |
| Index of Orange Book Terms |
Gold Book
| GOLD BOOK DEFINITION
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the Gold Book). Compiled by A. D. McNaught and A.Wilkinson. Blackwell Scientific Publications, Oxford (1997). |
| Protonated molecule |
|---|
|
http://goldbook.iupac.org/P04908.html 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: M + XH+ ? MH+ + X . 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 |
| IUPAC Gold Book |
| Index of Gold Book Terms |
