Tetraborane(10)
Title: Tetraborane(10)
CAS Registry Number: 18283-93-7
Additional Names: Tetraboron decahydride; borobutane
Molecular Formula: B4H10
Molecular Weight: 53.32
Percent Composition: B 81.10%, H 18.90%
Literature References: Prepd by the reaction of magnesium boride with hydrochloric or phosphoric acid: Stock, Kuss, Ber. 56B, 789 (1923); from dihydropentaborane: Burg, Schlesinger, J. Am. Chem. Soc. 55, 4009 (1933); from diborane: Stock, Mathing, Ber. 69B, 1456 (1936); Klein et al., J. Am. Chem. Soc. 80, 4149 (1958). Review: Greenwood in Comprehensive Inorganic Chemistry vol. 1, J. C. Bailar, Jr. et al., Eds. (Pergamon Press, Oxford, 1973) pp 785-791.
Properties: Gas; disagreeable odor; mp -120°; bp 18°. Vapor pressure 580 mm Hg at 6°; 388 mm at 0°. Dec at room temp in a few hours. Dec rapidly at 100°. Ignites spontaneously in air or oxygen. Hydrolyzes in water to boric acid and hydrogen. Reacts with ammonia to form a tetraammoniate.
Melting point: mp -120°
Boiling point: bp 18°

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