30. Organosiloxy-derivatives of metals. Part II. Trialkylsilyloxides of quinquevalent and sexivalent uranium

Reaction of trialkylsilanols with uranium pentaethoxide or uranium hexaethoxide gives uranium pentakis- or hexakis-trialkylsilyloxides. The pentakistrialkylsilyloxides were prepared also from uranium pentakistrimethylsilyloxide by silanol exchange. The physicochemical properties of these compounds are compared with those of the corresponding uranium t- alkoxides and tantalum pentakistrialkylsilyloxides. The preparation of uranium hexakis-t-pentyloxide is reported. (auth)