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  • Title: Identification of bismuth-thiolate-carboxylate clusters by electrospray ionization mass spectrometry.
    Author: Phillips HA, Burford N.
    Journal: Inorg Chem; 2008 Apr 07; 47(7):2428-41. PubMed ID: 18293918.
    Abstract:
    The known thermal and hydrolytic stability of bismuth-sulfur bonds indicates that biological targets for bismuth likely involve thiol or thiolate functionalities, such as in L-cysteine. Complexes of bismuth with cysteine or other thiol-carboxylic acid ligands have been isolated and characterized providing a preliminary view of the potential participation of these functional groups in the biochemical mechanisms involving bismuth. A broader assessment of bismuth-thiolate interactions has been possible using electrospray ionization mass spectrometry (ESI-MS). A wide range of complexes has been observed containing mercaptosuccinic acid, 2-mercaptopropionic acid, 3-mercaptopropionic acid, and/or 2-amino-3-mercaptopropionic acid (cysteine). The identification of various multibismuth multiligand cluster ions defines new chemistry for bismuth.
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