Fragmentation and rearrangement processes in the mass spectra of perhalogeno-aromatic compounds. Part V. Pentafluorophenyl derivatives of tin and related compounds

Abstract

The mass spectra of the compounds (C₆F₅)_4–nSnR_n(n= 1–3; R = Ph, Bu, and Me), [Me₃Sn]₂C₆X₄(X = F and Cl) and some related compounds have been studied. The basic features of the spectra are correlated with the nature and number of the hydrocarbon groups, and in the second type of compound, with the nature of the halogen and the ring position of the trimethyltin groups. In general, the mass spectra of compounds of the first type vary markedly with differing hydrocarbons, while increasing the hydrocarbon content shows no unusual features in the spectra. In compounds of the second type, the differences in the spectra of the fluorinated and chlorinated compounds are less obvious than the differences observed in the spectra of the 1,2- and 1,4-isomers. Halogen transfers to tin are common throughout leading to both neutral and charged tin–halogen species.