Anal. Chem. 2009, 81, 6399–6406
Vapor Generation of Inorganic Anionic Species After Aqueous phase Alkylation with Trialkyloxonium Tetrafluoroborates Alessandro D’Ulivo,*,† Enea Pagliano,‡ Massimo Onor,† Emanuela Pitzalis,† and Roberto Zamboni‡ C.N.R., Institute of Chemical and Physical Processes, Via G. Moruzzi, 1, 56124 Pisa, Italy, and Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa, Italy Aqueous phase reaction of trialkyloxonium tetrafluoroborates, R3O+BF4- (RdMe, Et) has been tested in the alkylation of simple inorganic anionic substrates such as halogen ions, cyanide, thiocyanate, sulphide and several oxoanions or their corresponding oxoacids. Gaseous products were separated and identified by gas chromatography mass spectrometry (GC-MS). Alkylated derivatives RI, RBr, RCl were obtained for iodide, bromide, and chloride, respectively, while for fluoride its conversion efficiency to RF is very poor. RCN and R2S were obtained for cyanide and sulphide, while thiocyanate gives RSCN as a main reaction product with a minor amount of alkylisothiocyanate, RNCS (
