Thorium selenides

The compounds ThSe(cr), Th2Sc3(cr), Th2Ses(cr), and Th7SC 2(cr) have been reported, but no experimental thermodynamic information is available. 

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IX.2 Selenium compounds and complexes IX.2.1 Solid and gaseous thorium selenides IX.2.1.1 Phase diagram and crystal structures... 

The structural chemistry of the actinides is often similar to that of lighter transition metals, such as Zr and Hf, and to that of the lanthanides however, the diffuse nature of the 5/ orbitals leads to some differences and specifically to interesting magnetic and electrical properties. The actinide sulfides are generally isostructural with the selenides, but not with the analogous tellurides. The binary chalcogenides of uranium and thorium have been discussed in detail [66], but the structural... 

Phosphine sulfides, selenides. Phosphine sulfides and selenides do not often act as Lewis bases towards tetravalent actinides, owing to their propensity for chalcogen transfer. Only the thorium complex ThCl4(SePPh3)2 has been reported. ... 

EXPLOSION and FIRE CONCERNS combustible solid NFPA rating (NA) reacts to form explosive products with metal amides contact with acids may cause formation of poisonous hydrogen selenide gas incompatible or reacts violently with barium carbide, bromine pen-tafluoride, chromic oxide, fluorine, lithium carbide, lithium silicon, metals, nickel, sodium, nitric acid, nitrogen trichloride, oxygen, potassium, potassium bromate, rubidium carbide, zinc, silver bromate, uranium, strontium carbide, and thorium carbide toxic gases and vapors may be released in a fire involving selenium, sodium selenite, sodium selenate, and selenium dioxide use water for firefighting purposes. 

Bear, J., McTaggart, F. K., The sulphides, selenides, and tellurides of titanium, zirconium, hafnium, and thorium. II. Chemical properties,... 

General.—Liquid bismuth has been used as the solvent for calorimetry and data for the enthalpy of solution of copper, indium, and tellurium have been obtained. Enthalpy of formation data are also given for a series of copper selenides. Studies on the distribution of lithium and bismuth between liquid Li-Bi alloys and molten LiCl suggested that a salt-like species LijBi was being selectively dissolved from the alloys. The mutual solubility of thorium and the metallic lanthanides La, Nd, and Eu in bismuth over the range 350—700 °C shows evidence for the formation of solid compounds with the composition ThLnBij,. ... 

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