39262-04-9Relevant articles and documents
Thallium-205 Nuclear Magnetic Resonance Spectra of Thallium(I) Alkoxides
Burke, Phillip J.,Matthews, Ray W.,Gillies, Duncan G.
, p. 1439 - 1442 (2007/10/02)
Thallium-205 n.m.r. spectra have been determined for toluene solutions of a series of 11 thallium(I) alkoxides including five previously unreported compounds.The observed spectra are consistent with the predominance of tetrametric species, 4> (R= alkyl group), in solution.The essentially three-line spectra arise from thallium-203-thallium-205 spin-spin coupling with J(203Tl-205Tl) in the range 2 170-2 769 Hz.The thallium-205 chemical shifts span 434 p.p.m. and show some dependence on the nature of alkyl group.There is no apparent correlation of J(203Tl-205Tl) with the properties of the alkyl groups.The values of J(203Tl-205Tl) are compered with those found for dimeric dimethylthallium(III) derivatives and are discussed in terms of the Fermi-contact contribution to the coupling mechanism.