Formation and fragmentations of organometallic complexes involving aliphatic α‐amino acids and transition metal cations—a plasma desorption mass spectrometry study
- 1 January 1995
- journal article
- research article
- Published by Wiley in Journal of Mass Spectrometry
- Vol. 30 (1) , 172-179
- https://doi.org/10.1002/jms.1190300126
Abstract
Amino acid/transition metal chloride mixtures were studied by plasma desorption mass spectrometry. The six aliphatic α‐amino acids were considered: glycine (Gly), alanine (Ala), valine (Val), leucine (Leu), isoleucine (Ile) and proline (Pro), together with four transition metal chloride salts: CoCl2, NiCl2, CuCl2 and FeCl2. Mixtures spectra show that MCat+ complexes are formed where M = amino acid and Cat = Co, Ni, Cu or FeCl. Fragmentations of MCat+ ions lead to both organometallic and organic ions. Isotopic labelling has allowed to demonstrate some fragmentation mechanisms.Keywords
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