In the Grignard reagent, the carbon-magnesium bond is covalent
but highly polar, with carbon pulling electrons from electropositive
magnesium; the magnesium halogen bond is essentially ionic Grignard reagents are highly reactive and react with any source of
proton to give hydrocarbons Even water, alcohols, amines are sufficiently
acidic to convert them to corresponding hydrocarbons It is therefore necessary to avoid even traces of moisture from a Grignard
reagent