A novel chemical ionization reagent ion for organic analytes: the aquachloromanganese(II) cation [ClMn(H2O)(+)]

作者：Gqamana Putuma P; Duan Penggao; Fu Mingkun; Gallardo Vanessa; Kenttaemaa Hilkka I

来源：Rapid Communications in Mass Spectrometry, 2012, 26(8): 940-942.

DOI：10.1002/rcm.6187

The reactivity of ClMn(H2O)(+) towards small organic compounds (L) was examined in a Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer. The organic compounds studied are aliphatic and aromatic alcohols, aliphatic amines, ketones, an epoxide, an ether, a thiol and a phosphine. All the reactions lead to the formation of the ClMn(H2O)(L)(+) complex, which dissociates by loss of the H2O molecule. In general, the reactions were found to occur with high efficiencies (>85%), indicating them to be exothermic. Electron transfer was also observed between ClMn(H2O)(+) and compounds with low ionization energies (IE), to form the molecular ion (L+center dot) of the analyte. Based on these observations, the IE of ClMn(H2O)(+) is approximated to be 8.1 +/- 0.1 eV. Thus, the utility of ClMn(H2O)(+) as a chemical ionization reagent in mass spectrometry is expected to be limited to organic compounds with IEs greater than 8 eV.

• 出版日期2012-4-30