Beryllium Hydride
Title: Beryllium Hydride
CAS Registry Number: 7787-52-2
Molecular Formula: BeH2
Molecular Weight: 11.03
Percent Composition: Be 81.71%, H 18.28%
Literature References: Lower purity material prepd by treating dimethylberyllium with LiAlH4 in ether: Barbaras et al., J. Am. Chem. Soc. 73, 4585 (1951); higher purity by pyrolysis of di-tert-butylberyllium: Coates, Glocking, J. Chem. Soc. 1954, 2526; Head et al., J. Am. Chem. Soc. 79, 3687 (1957); from triphenyl phosphine and beryllium borohydride: Banford, Coates, J. Chem. Soc. 1964, 5591.
Properties: White solid. Higher purity material is inert to laboratory air. Loss of hydrogen at 190-200° negligible, rapid at 220°. Reacts slowly with water, rapidly with dil acids. Insol in ether, toluene, isopentane. Reacts with diborane to form beryllium borohydride.

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