Nomenclature
CAS number: 7783-29-1
Tetrasilicon decahydride; silicobutane; tetrasilicane; tetrasilicobutane.
H
10Si
4; mol wt 122.42.
H 8.23%, Si 91.77%.
Si
4H
10.
Description and references
Prepn by the action of hydrochloric acid on
magnesium silicide: Stock, Somiesky, Ber. 49, 111 (1916); 54B, 524 (1921); 56B, 247 (1923); Stock et al., Ber. 56, 1695 (1923); Emeleus, Maddock, J. Chem. Soc. 1946, 1131.
Properties
Liquid. mp ≈-90°; bp 109°; vapor pressure 7.8 mm Hg at 0° (Stock et al., loc. cit.). mp -84.3°; bp (calc) 107.4°; vapor pressure 9.1 mm Hg at 0° (Emeleus, Maddock, loc.
cit.). d0 0.825. Dec at room temp; explodes in air. Reacts vigorously with
CCl4 and CHCl3. Dec in water.