Complex compounds of uranium triiodide with macrocyclic polyethers

Complex compounds of uranium triiodide with a series of crown ethers were synthesized from tetrahydrofuran (HTF) solutions. It was established that complexes of 1:1 composition formed in the case of 15-crown-5, 18-crown-6, dithia-18-crown-6 and diaza-18-crown-6. Formation of complexes of both 1:1 and 1:2 composition is possible for 12-crown-4. As opposed to mentioned crown ethers, uranium triiodide forms complexes with dibenzo-18-crown-6 and dicyclohexyl-18-crown-6, well soluble in THF. Thermal stability of synthesized complexes was studied; spectra were obtained. All synthesized complexes of uranium triiodie are well soluble in water, ethanol, acetonitrile and propylenecarbonate