Beryllium borohydride

Beryllium borohydride is an inorganic compound with the chemical formula Be(BH4)2.
Structure.
The crystal structure is made up of a helical polymer of BH4Be and BH4 structure units.
Production.
Beryllium borohydride is formed by the reaction of beryllium hydride with diborane in an ether solution.
Application.
The purest beryllium hydride is obtained by the reaction of triphenylphosphine, PPh3, with beryllium borohydride, Be(BH4)2: