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Purity testing of organometallic catalysts by micro liquid chromatography-electron ionization mass spectrometry

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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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Authors and Affiliations

  1. Department of Chemistry, University of Oslo, Blindern, P.O. Box 1033, 0315, Oslo, Norway

    I. Bruheim, E. C. Fooladi, E. Lundanes & T. Greibrokk

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  1. I. Bruheim
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  2. E. C. Fooladi
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  3. E. Lundanes
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  4. T. Greibrokk
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Bruheim, I., Fooladi, E.C., Lundanes, E. et al. Purity testing of organometallic catalysts by micro liquid chromatography-electron ionization mass spectrometry. Chromatographia 50, 479–484 (1999). https://doi.org/10.1007/BF02490745

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  • DOI: https://doi.org/10.1007/BF02490745

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