The crystals were allowed to grow overnight. Some
of them were taken for single-crystal X-ray diffraction
measurements. The yield was 24.3 g. This high value was
due to the formation of a solvent adduct, which had also
been reported earlier.
4,5
In consideration of the fact that
Ca(AlH4
)
2
â4THF (molar mass 288.4 g/mol) was produced
(see below), the yield was 84%.