Artículos de revistas
Sequential Irmpd Of Xge(oet)4 - Ions: Gas-phase Synthesis Of Novel Oxy-germanium Anions
Registro en:
International Journal Of Mass Spectrometry. , v. 306, n. 02/03/15, p. 219 - 226, 2011.
13873806
10.1016/j.ijms.2010.11.019
2-s2.0-80052403787
Autor
Xavier L.A.
Malaspina T.V.
Morgon N.H.
Menegon J.J.
Riveros J.M.
Institución
Resumen
The gas-phase ion/molecule reactions of F- and EtO- with Ge(OEt)4 yield readily and exclusively pentacoordinated complexes XGe(OEt)4 - (X = F, EtO) at pressures in the 10-8 T range as observed by FT-ICR techniques. These hypervalent species are prone to undergo sequential fragmentations induced by infrared multiphoton excitation that lead to a variety of germyl and germanate anions. In the case of FGe(OEt)4 -, three primary competitive channels are observed in the IRMPD process that can be identified as (EtO) 3GeO-, F(EtO)2GeO- and (EtO) 3Ge-. Ab initio calculations have been carried out to characterize the primary fragmentation paths induced by IRMPD and the most favorable structure of the resulting anions. The gas-phase acidity of a number of these germanium-containing ions have been estimated by bracketing experiments and by theoretical calculations. 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