X-ray photoelectron spectroscopic studies on some organotin compounds

The binding energy variations of the Sn3d52, S2p and N1s core levels are presented for a series of triphenyltin mono- and di-thiocarbamates, in which the R-group substituent is varied widely. The possible inductive effect of the R-group substituent on the Sn, S and N core level binding energies has been examined and the Sn3d52 and S2p binding energies appear to experience no significant variation due to the R-group; however a quite marked effect on N1s binding energies has been observed. This is correlated with the electron releasing tendency of the R-groups. Further, correlation of the N1s binding energies with the N-C infrared stretching frequencies is observed and found to be in good agreement with theory.