Proton and thallium-203 and -205 nuclear magnetic resonance and INDOR studies of dimeric dimethylthallium derivatives

Variable-temperature 203Tl and 205Tl n.rn.r. spectra (with and without 1H-decoupling) and 1H-{205Tl} INDOR spectra of dimeric dimethylthallium ethoxide provide evidence of chemical exchange. The 1H and 1H–{205Tl} INDOR spectra of dimethylthallium dimethylamide have also been analysed in terms of superimposed spectra of homonuclear and heteronuclear species. The thallium–thallium coupling constant in both compounds has been determined. Thallium chemical shifts are also reported for related compounds.