Protonated molecule: Difference between revisions
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Note 2: The terms pseudo-molecular ion and quasi-molecular ion are deprecated; a specific term such as protonated molecule, or a chemical description such as [M+Na]<sup>+</sup>, [M-H]<sup>-</sup>, etc. should be used | Note 2: The terms pseudo-molecular ion and quasi-molecular ion are deprecated; a specific term such as protonated molecule, or a chemical description such as [M+Na]<sup>+</sup>, [M-H]<sup>-</sup>, etc. should be used | ||
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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. | |||
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Revision as of 00:02, 26 July 2009
Obsolete Template
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 |
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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 |
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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 |
