✦ LIBER ✦

Formation and fragmentations of organometallic complexes involving aliphatic α-amino acids and transition metal cations—a plasma desorption mass spectrometry study

✍ Scribed by Stéphane Bouchonnet; Yannik Hoppilliard; Gilles Ohanessian

Publisher: John Wiley and Sons
Year: 1995
Tongue: English
Weight: 606 KB
Volume: 30
Category: Article
ISSN: 1076-5174
DOI: 10.1002/jms.1190300126

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✦ Synopsis

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: CoCl~2~, NiCl~2~, CuCl~2~ and FeCl~2~. 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.

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