TY - JOUR
T1 - Generation of C6H4+. by laser vaporization of magnesium with o-C6H4F2 in argon carrier gas
AU - Liu, Haichuan
AU - Yang, Shihe
AU - Balteanu, Iulia
AU - Balaj, O. Petru
AU - Fox-Beyer, Brigitte S.
AU - Beyer, Martin K.
AU - Bondybey, Vladimir E.
PY - 2004
Y1 - 2004
N2 - A route to efficient generation of C6H4+., potentially the benzyne radical cation, is presented. Laser vaporization of Mg+. and supersonic expansion in helium doped with o-, m-, or p-C6H4F2 yields, among other ions, o-, m-, p-C6H4F2Mg+. complexes, but no C6H4+.. Collision-induced dissociation experiments show that the o-C6H4F2Mg +. complex can be converted into C6H4 +. 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. C6H4+., are obtained.
AB - A route to efficient generation of C6H4+., potentially the benzyne radical cation, is presented. Laser vaporization of Mg+. and supersonic expansion in helium doped with o-, m-, or p-C6H4F2 yields, among other ions, o-, m-, p-C6H4F2Mg+. complexes, but no C6H4+.. Collision-induced dissociation experiments show that the o-C6H4F2Mg +. complex can be converted into C6H4 +. 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. C6H4+., are obtained.
UR - http://www.scopus.com/inward/record.url?scp=3042785963&partnerID=8YFLogxK
U2 - 10.1002/rcm.1512
DO - 10.1002/rcm.1512
M3 - Article
AN - SCOPUS:3042785963
SN - 0951-4198
VL - 18
SP - 1479
EP - 1481
JO - Rapid Communications in Mass Spectrometry
JF - Rapid Communications in Mass Spectrometry
IS - 13
ER -