1. The problem statement, all variables and given/known data Why is THF used as a solvent while preparing an alkyl magnesium bromide instead of diethyl ether? 2. Relevant equations 3. The attempt at a solution THF and diethyl ether being polar solvents are able to co-ordinate to the magnesium. May be it is because THF, which is more polar than diethyl ether is able to co-ordinate when diethyl ether fails to do so that efficiently. Wiki says THF substitutes diethyl ether when a higher boiling solvent is required. Can anybody elaborate it for me?