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Electron Capture Dissociation Mass Spectrometry of Metallo-Supramolecular Complexes

Kaczorowska, Malgorzata A and Hotze, Anna C. G and Hannon, Michael J. and Cooper, Helen J. (2010) Electron Capture Dissociation Mass Spectrometry of Metallo-Supramolecular Complexes. Journal- American Society for Mass Spectrometry, 21 (2). pp. 300-309. ISSN 1044-0305

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URL of Published Version: http://dx.doi.org/10.1016/j.jasms.2009.10.01

Identification Number/DOI: 10.1016/j.jasms.2009.10.01

The electron capture dissociation (ECD) of metallo-supramolecular dinuclear triple-stranded helicate Fe2L3
4 ions was determined by Fourier transform ion cyclotron resonance mass spectrometry. Initial electron capture by the di-iron(II) triple helicate ions produces dinuclear double-stranded complexes analogous to those seen in solution with the monocationic metal centers CuI or AgI. The gas-phase fragmentation behavior [ECD, collision-induced dissociation (CID), and infrared multiphoton dissociation (IRMPD)] of the di-iron double-stranded complexes, (i.e., MS3 of the ECD product) was compared with the ECD, CID, and IRMPD of the CuI and AgI complexes generated from solution. The results suggest that iron-bound dimers may be of the formFeI 2L2 2 and that ECD by metallo-complexes allows access, in the gas phase,to oxidation states and coordination chemistry that cannot be accessed in solution.

Type of Work:Article
Date:February 2010 (Publication)
School/Faculty:Colleges (2008 onwards) > College of Medical & Dental Sciences
Department:School of Biosciences
Subjects:QD Chemistry
Institution:University of Birmingham
Copyright Holders:Elsevier
ID Code:410
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