Electrospray Ionization Based Methods for the Generation of Polynuclear Oxo- and Hydroxo Group 6 Anions in the Gas-Phase
| Autor: | Iván Sorribes, Rosa Llusar, Cristian Vicent |
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| Rok vydání: | 2008 |
| Předmět: |
Anions
Ionització Tandem Collision-induced dissociation Chemistry Electrospray ionization Ion-molecule reactions Inorganic chemistry Group 6 oxide anions General Chemistry Condensed Matter Physics Biochemistry Medicinal chemistry Dissociation (chemistry) Catalysis CID chemistry.chemical_compound Hydroxo complexes Ionization General Materials Science Methanol Open shell |
| Zdroj: | Repositori Universitat Jaume I Universitat Jaume I |
| ISSN: | 1572-8862 1040-7278 |
| Popis: | Electrospray ionization (ESI) of the Lindqvist (n-Bu4N)2[M6O19] (M = Mo, W) polyoxometalates provides a straightforward entry for the generation of an assortment of oxo- and hydroxo anions in the gas-phase. In particular, the series of oxo dianions of general formula [(MO3) n O]2− (n = 2–6; M = Mo, W), monoanions, namely [(MO3) n O]− (n = 1, 2) and [(MO3) n ]− (n = 1, 2), and the hydroxo [(MO3) n (OH)]− (n = 1–6) species can be readily generated in the gas-phase upon varying the solvent composition as well as the ionisation conditions (typically the Uc cone voltage). Complementary tandem mass experiments (collision induced dissociation and ion–molecule reactions) are also used aimed to investigate the consecutive dissociation of these species and their intrinsic gas-phase reactivity towards methanol. Special emphasis is paid to some of the key factors of these group 6 anions related to the gas-phase activation of methanol, such as molecular composition, open vs closed shell electronic nature and cluster size. |
| Databáze: | OpenAIRE |
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