The formerly unknown compound of the composition LiHSiUO6 . 1.5H(2)O, which
belongs to the A(l/k)(k) HSiUO6 . nH(2)O series, is synthesized and studie
d. The compound-and the products of its thermal decomposition are structura
lly characterized by X-ray diffraction, IR spectroscopy, and thermal analys
is.