title: A novel chemical ionization reagent ion for organic analytes: the aquachloromanganese(II) cation [ClMn(H2O)+].
abstract: The reactivity of ClMn(H(2)O)(+) 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(H(2)O)(L)(+) complex, which dissociates by loss of the H(2)O 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(H(2)O)(+) and compounds with low ionization energies (IE), to form the molecular ion (L(+•)) of the analyte. Based on these observations, the IE of ClMn(H(2)O)(+) is approximated to be 8.1 ± 0.1 eV. Thus, the utility of ClMn(H(2)O)(+) as a chemical ionization reagent in mass spectrometry is expected to be limited to organic compounds with IEs greater than 8 eV.
authors.affiliation: Purdue University, Department of Chemistry, 560 Oval Drive, West Lafayette, IN 47907, USA.
authors.forename: Putuma P
authors.initials: PP
authors.lastname: Gqamana
authors.forename: Penggao
authors.initials: P
authors.lastname: Duan
authors.forename: Mingkun
authors.initials: M
authors.lastname: Fu
authors.forename: Vanessa
authors.initials: V
authors.lastname: Gallardo
authors.forename: Hilkka I
authors.initials: HI
authors.lastname: Kenttämaa