No abstract available

No abstract available

No abstract available

[en] Using the reduction of the trichlorides by lithium metal/naphthalene in tetrahydrofurane(THF), SmCl₂ and EuCl₂ were prepared in solventfree state, very sparingly soluble in THF. The reduction of YbCL₃, combined with extraction to eliminate the oxide chloride content, yielded the compound YbCl₂.THF, much more soluble in THF than YbCl₃. (author)

No abstract available

[en] Solubility in triple systems: samarium chloride-hydrazine dichloride-water (1), samarium chloride-ethylenediamine dichloride-water (2), and samarium chloride-hexamethylenediamine dichloride-water (3) at 20 and 40 deg C was studied. It was established that the systems (1-3) are of the eutonic type. The equilibrium solid phases are the initial substances: samarium chloride hexahydrate and hydrazine, ethylenediamine, and hexamethylene dichlorides. Since the water solubility of the diamine dichlorides used increases in their series, the crystallization fields of these compounds on the solubility isotherms decrease. The compositions of the eutonics are enriched in the content of diamine dichlorides in the same sequence

[en] The inner sphere water coordination of Sm³⁺ and Eu³⁺ in concentrated (3.23 m) aqueous chloride solutions was obtained from x-ray diffraction measurements at 25 ⁰C. The average water coordination is 8.8 for Sm³⁺ and 8.3 for Eu³⁺. The average RE³⁺--H₂O distances are 2.474 A for Sm³⁺ and 2.450 A for Eu³⁺. The average RE³⁺xxxCl^- ion pair distances occur near 4.9 A. A careful examination of the x-ray diffraction results for ten rare earth chloride solutions indicates that the inner sphere water coordination of the rare earth ions in aqueous solutions decreases from nine to eight due to the decreasing rare earth ionic radii. The ions La³⁺ through Nd³⁺ are nine coordinated, those between Nd³⁺ and Tb³⁺ are transitional between nine and eight, and those from Tb³⁺ to Lu³⁺ are eight coordinated

No abstract available

[en] Studied has been solubility of solid phases in ternary systems: samarium chloride - methylamine hydrochloride - water (1), samarium chloride - dimethyl-amine hydrochloride-water (2) and samarium chloride-trimethylamine hydrochloride-water (3) at 20 and 40 deg C. It has been established that phase diagrams of system (1) are of simple eutonic type. Crystallization fields of new solid phases of the composition: SmCl₃x4(CH₃)₂NHxHCl(2), SmCl₃x3(CH₃)₃NxHCl(3) have been discovered in systems (2) and (3). The compounds are separated in the individual state using preparative method. Chemical analysis has been conducted and some of their physical properties have been investigated

No abstract available