Chloro-Complexes of Pentavalent Niobium, Tantalum, Protactinium, Tungsten and Uranium
Although oxychloro-complexes of niobium (V) (1), tungsten (V) (2) and uranium (V) (3) have been known for several years only niobium (V) and tantalum (V) were known to form hexachloro-complexes (e.g. 4,5) when this study was started and even these had only been prepared by heating the appropriate chlorides together in a sealed system. As this work was being completed however Adams et al.(6) reported the preparation of tetraethylammonium hexachloro complexes of niobium (V), tantalum (V) and tungsten (V) from solutions of the chlorides in thionyl chloride, one of the solvents in which we had conducted our own investigations.
KeywordsThionyl Chloride Preparative Procedure Seal System Partial Molal Entropy Ionic Heat
Unable to display preview. Download preview PDF.
- 1.WEINLAND and STORZ, Ber., 39, 3057(1906); Z.anorg.allg.Chem., 54, 223(1907).Google Scholar
- 2.COLLENBERG, Z.anorg.allg.Chem., 102, 259 (1918)Google Scholar
- 4.MOROZOV and KORSHUNOV, Zhur.Neorg.Khim., 1, 145(1956).Google Scholar
- 5.MOROZOV, KORSHUNOV and SIMONICH, Zhur.Neorg.Khim., 1, 1646 (1956).Google Scholar
- 6.ADAMS, CHATT, DAVIDSON and GERRATT, J.Chem.Soc. (London), 1963, 2189.Google Scholar
- 7.BAGNALL and BROWN, J.Chem.Soc. (London), in press.Google Scholar
- 8.BAGNALL, BROWN and du PREEZ, J.Chem.Soc. (London), in press.Google Scholar
- 9.HARGREAVES and PEACOCK, J.Chem.Soc. (London), 1958, 3776.Google Scholar