Premium
Generation of C 6 H 4 + . by laser vaporization of magnesium with o ‐C 6 H 4 F 2 in argon carrier gas
Author(s) -
Liu Haichuan,
Yang Shihe,
Balteanu Iulia,
Balaj O. Petru,
FoxBeyer Brigitte S.,
Beyer Martin K.,
Bondybey Vladimir E.
Publication year - 2004
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1512
Subject(s) - chemistry , argon , vaporization , analytical chemistry (journal) , helium , dissociation (chemistry) , ion , atomic physics , bond dissociation energy , mass spectrometry , mass spectrum , magnesium , supersonic speed , polyatomic ion , hydrogen , organic chemistry , physics , chromatography , thermodynamics
A route to efficient generation of C 6 H 4 + . , potentially the benzyne radical cation, is presented. Laser vaporization of Mg + . and supersonic expansion in helium doped with o ‐, m ‐, or p ‐C 6 H 4 F 2 yields, among other ions, o ‐, m ‐, p ‐C 6 H 4 F 2 Mg + . complexes, but no C 6 H 4 + . . Collision‐induced dissociation experiments show that the o ‐C 6 H 4 F 2 Mg + . complex can be converted into C 6 H 4 + .in a mildly energetic collision, with a center‐of‐mass energy around 1–2 eV. These conditions can also be reached in the ion source when argon is used as a carrier gas. In this way, mass spectra containing the desired m/z 76 peak, i.e. C 6 H 4 + . , are obtained. Copyright © 2004 John Wiley & Sons, Ltd.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom