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

Abstract

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.