Electron capture dissociation mass spectrometry of metallo-supramolecular complexes
| Autor: | Anna C. G. Hotze, Malgorzata A. Kaczorowska, Michael J. Hannon, Helen J. Cooper |
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| Rok vydání: | 2010 |
| Předmět: |
Silver
Fourier Analysis Electron-capture dissociation Chemistry Electron capture 010401 analytical chemistry Analytical chemistry Electrons QD Chemistry 010402 general chemistry Mass spectrometry Tandem mass spectrometry Ferric Compounds 01 natural sciences Mass Spectrometry Dissociation (chemistry) Fourier transform ion cyclotron resonance 0104 chemical sciences Crystallography Fragmentation (mass spectrometry) Structural Biology Gases Infrared multiphoton dissociation Copper Spectroscopy |
| Zdroj: | Journal of the American Society for Mass Spectrometry. 21:300-309 |
| ISSN: | 1044-0305 |
| DOI: | 10.1016/j.jasms.2009.10.018 |
| Popis: | The electron capture dissociation (ECD) of metallo-supramolecular dinuclear triple-stranded helicate Fe(2)L(3)(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 Cu(I) or Ag(I). The gas-phase fragmentation behavior [ECD, collision-induced dissociation (CID), and infrared multiphoton dissociation (IRMPD)] of the di-iron double-stranded complexes, (i.e., MS(3) of the ECD product) was compared with the ECD, CID, and IRMPD of the Cu(I) and Ag(I) complexes generated from solution. The results suggest that iron-bound dimers may be of the form Fe(I)(2)L(2)(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. |
| Databáze: | OpenAIRE |
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