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U(BH_4)_4是一种挥发性较大的铀化合物,它在60℃时的蒸气压约为4mmHg,它在干燥空气中稳定,而150°以上则很容易分解。这种特性引起了激光分离同位素工作者的兴趣,当采用适当频率激光器辐照D(BH_4)_4时,可使一种铀同位素的分子激发,再用另一激光器使激发分子分解。而未分解的分子则可再升华,从而达到同位素分离的目的。U(BH_4)_4的光谱性质已被很多人所研究,但其合成方法还一直沿用早先施莱辛格(H.I.Schlesinger)等人所采用的方法,系将过量的硼氢化铝与四氟化铀作用制得。其反应式表示如下:
U (BH_4) _4 is a more volatile uranium compound with a vapor pressure of about 4 mmHg at 60 ° C. It is stable in dry air and readily decomposes above 150 °. This property has aroused the interest of laser separation isotope workers. When D (BH_4) _4 is irradiated by an appropriate frequency laser, a molecule of uranium isotope can be excited, and then another laser can be used to decompose the excited molecule. Unsolubilized molecules can then sublimation, so as to achieve the purpose of isotope separation. The spectral properties of U (BH_4) _4 have been studied by many people, but the synthesis method has been followed by the method previously used by HISchlesinger et al., Which combines excess aluminum borohydride with uranium tetrafluoride The role of system. The reaction is expressed as follows: