Ethylmagnesium bromide dietherate

Rundle and co-worker performed x-ray diffraction studies on solid phenylmag-nesium bromide dietherate and on ethylmagnesium bromide dietherate, which they obtained by cooling ordinary ethereal Grignard solutions until the solids crystallized. They found that the structures were monomeric ... 

Ail d in, e.g, solid ethylmagnesium bromide dietherate, each oxygen "atom has,-in addition to its two neighboring carbon atoms, a magnesium-atom neighbor that lies almost exactly on the bisector of the ( ()( angle 85h... 

Ethylmagnesium bromide dietherate, a Grignard reagent solvated by ether. 

---