ilovechemistry said:hi guys, i need help on the bonding of LiAlH4. can it considered an ionic bonding because Li is Li+ and AlH4 is AlH4-. seems like a perfect ionic bonding situation to me. or is the bonding simply convalent, permanent-dipole permament-dipole attraction to be exact.
LiAlH4, also known as lithium aluminium hydride, is a common reducing agent in organic chemistry. Its chemical structure consists of a lithium ion (Li+) bonded to an aluminium atom (Al) and four hydrogen atoms (H), with a tetrahedral arrangement.
LiAlH4 bonds with other molecules through its hydride ion (H-), which acts as a nucleophile and attacks the electrophilic center of the molecule being reduced. This results in a transfer of electrons and the formation of a new bond.
No, LiAlH4 is extremely reactive and can react violently with water to produce highly flammable hydrogen gas. Therefore, it should only be used in non-aqueous solvents.
LiAlH4 should only be handled by trained professionals in a well-ventilated fume hood, as it can release toxic fumes. It should be stored in a dry, air-tight container and kept away from moisture and sources of heat or ignition. Proper personal protective equipment, such as gloves and safety glasses, should be worn at all times.
LiAlH4 is commonly used as a reducing agent to convert carbonyl compounds, such as aldehydes and ketones, into alcohols. It can also reduce carboxylic acids to alcohols, and esters to aldehydes. Additionally, it is used in the reduction of nitriles and nitro compounds to their corresponding amines.