Protonated molecule: Difference between revisions
No edit summary |
|||
| Line 5: | Line 5: | ||
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 | ||
}} | |||
== Gold Book entry == | |||
{{gold| | |||
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<sup>+</sup> ? MH<sup>+</sup> + 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 | |||
}} | }} | ||
Revision as of 23:45, 16 July 2009
Obsolete Template
Gold Book entry
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 |
