Kernresonanzuntersuchungen an Thalliumverbindungen,besonders Thallium–Phosphat-Gläsern

NMR Studies on Thallium Compounds, especially of Thallium Phosphate Glasses Nuclear magnetic resonance techniques with ²⁰⁵Tl have been used to study the Character of the Tl–O bond in different Tl-salts and phosphate systems containing Tl. Generally the covalent contribution to the Tl–O bond increases in the order of the Tl Content. Tl₃PO₄ has the highest covalent contribution on the systems investigated. If Tl is successively substituted by K no influence on the Tl–O bond-character has been observed, but Mg causes diminishing of the covalent character. It follows from Paper chromatography that high condensated phosphates (P₈) in acid solutions are hydrolysed the easier the higher the covalent contribution of the Tl–O–bond.