FACILE SYNTHESIS OF UCL4 AND THCL4, METALLOTHERMIC REDUCTIONS OF UCL4 WITH ALKALI-METALS AND CRYSTAL-STRUCTURE REFINEMENTS OF UCL3, UCL4 AND CS2UCL6

作     者：SCHLEID, T MEYER, G MORSS, LR 

作者机构：ARGONNE NATL LABDIV CHEMARGONNEIL 60439 

出 版 物：《JOURNAL OF THE LESS-COMMON METALS》 (J Less Common Met)

年 卷 期：1987年第132卷第1期

页      面：69-77页

核心收录：

基　　金：This work was supported by NATO Research Grant to G. M. and L. R. M.  by the Fonds der Chemischen Industrie  Frankfurt  F.R.G.  and by the Office of Basic Energy Sciences  Division of Chemical Sciences  U.S. Department of Energy  under contract W-31-109-ENG-38 

主　　题：URANIUM COMPOUNDS 

摘      要：Uranium and thorium tetrachloride (UCl 4 and ThCl 4 ) were obtained via the ammonium chloride route from UH 3 and thorium metal respectively, with the ternary chlorides (NH 4 ) 2 UCl 6 and (NH 4 ) 2 ThCl 6 acting as intermediates. The crystal structure of UCl 4 was refined ( R = 0.031, R w = 0.026). Cs 2 UCl 6 and Cs 2 ThCl 6 were synthesized, their lattice constants refined from powder data, and the crystal structure of Cs 2 UCl 6 refined from single-crystal data ( R = 0.066, R w = 0.052). Some indication for stacking disorder in the [00.1] direction was found. Metallothermic reductions of UCl 4 with lithium and sodium led to UCl 3 whose crystal structure was also refined ( R = 0.029, R w = 0.023). Potassium reduced UCl 4 to K 2 UCl 5 . No further reduction could be detected.