Gas-Phase Fragmentation of Polyoxotungstate Anions

Michelle T Ma; Tom Waters; Karin Beyer; Rosemary Palamarczuk; Peter JS Richardt; Richard AJ O'Hair; Anthony G Wedd

Journal article

Gas-Phase Fragmentation of Polyoxotungstate Anions

Michelle T Ma, Tom Waters, Karin Beyer, Rosemary Palamarczuk, Peter JS Richardt, Richard AJ O'Hair, Anthony G Wedd

INORGANIC CHEMISTRY | AMER CHEMICAL SOC | Published : 2009

DOI: 10.1021/ic8016326

Abstract

A series of phospho-polyoxotungstate anions was transferred to the gas phase via electrospray ionization (ESI), and the anions' fragmentation was examined by collision-induced dissociation (CID). The anions included [PW12O40]3-, [P2W18O62]6-, and {Co4(H2O)2][PW9O34]2}10- as well as lacunary and metal-substituted derivatives such as [PW11O39]7- and [MPW11O39]5- (M = Co(II), Ni(II), Cu(II)). Common species observed in the mass spectra arose from protonation and alkali metal cationization of the precursor ions. Additional species arising from the formal loss of oxide from the precursor species were also observed, presumably formed via protonation and the loss of an oxo ligand as water. These pr..

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University of Melbourne Researchers

Richard O'Hair Author Chemistry

Anthony Wedd Author Chemistry

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Grants

Awarded by Australian Research Council

Funding Acknowledgements

We thank the Australian Research Council for financial support via grants DP0772053 (T.W.), DP0450134 (M.T.M. and A.G.W.) and DP0558430 (R.A.1O.). We thank the Research Transfer Facility of Bio21 for access to the Agilent 6510 Q-TOF and Paul O'Donnell for helping train two of us (M.T.M. and T.W.) in the use of the instrument.