Purity testing of organometallic catalysts by micro liquid chromatography-electron ionization mass spectrometry |
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Authors: | Bruheim I Fooladi E C Lundanes E Greibrokk T |
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Institution: | (1) Department of Chemistry, University of Oslo, Blindern, P.O. Box 1033, 0315 Oslo, Norway |
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Abstract: | Summary A micro liquid chromatography-mass spectrometry system utilizing 100 μm i. d. packed capillary columns has been used for purity
testing of organometallic catalysts. The total effluent, 1 μLmin−1 from the column, was introduced directly into the ion source of a bench-top quadrupole mass spectrometer and electron ionization
mass spectra were acquired. In full scan mode a mass limit of detection of 10–15 ng was achieved for the organometallic compounds
investigated. The catalysts dimethyl pentamethylcyclopentadienyl iridium dimethylsulphoxide (Cp*Ir(DMSO)Me2) and di(pentamethylcyclopentadienyl dichloro iridium) ((Cp*IrCl2)2) were purity tested and their electron ionization mass spectra recorded. Impurities present down to 1% of the main compound
could be determined using large volume injection. |
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Keywords: | Liquid chromatography-mass spectrometry Packed capillary column Electron ionization Organometallic compounds |
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