Abstract
Diorgano thallium hydroxide reacts very smoothly in organic solvents with catechols to stable paramagnetic ion pairs. This reaction has been investigated with two semiquinone anions and 13 different diorgano thallium cations. The data obtained indicate a strong dependence of the thallium coupling constant on the nature of the metal substituents. The effects observed are discussed in terms of electronic and steric interactions. All ion pairs indicate remarkable temperature dependence of the thallium splitting and the g-factor. These results are compared with the results obtained in alkali metal ion pairs using a model described in the literature
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