Aluminium chloride, also known as aluminium trichloride, is an inorganic compound with the formula AlCl3. It forms a hexahydrate with the formula [Al (H2O)6]Cl3, containing six water molecules of hydration.

Nov 19, 2014 · The compounds containing less than 8 electrons in the valence shells are called electron deficient compounds such as $\ce{AlCl3}$, where the aluminum atom has 6 valence electrons. It has been suggested that two aluminum atoms complete their octet by accepting a pair of electrons from chlorine atoms:

A l C l 3 can form dimer and exists as A l 2 C l 6, aluminium has vacant d-orbitals which can accommodate electron from chlorine atom. A l C l 3 is an electron deficient compound in A l (octet incomplete) thus behaves as Lewis acid and A l completes it by taking electron pair from C l-atom as shown in figure.

The bonding situation in (AlClX3)X2 and (BClX3)X2 is nothing trivial and the reason why aluminium chloride forms dimers, while boron trichloride does not, cannot only be attributed to size. In order to understand this phenomenon we need to look at both, the monomers and the dimers, and compare them to each other.

Apr 7, 2008 · The energetically preferred coordination number of four causes AlCl 3 to form the dimer Al 2 Cl 6 shown, even in the vapor phase. AlCl 3 is perhaps the quintessential Lewis acid; it reacts violently with water to form strongly acidic solutions.

When aluminium chloride is in a liquid or molten state, it exists as a dimer. Here, its coordination geometry will be tetrahedral. At higher temperatures, the dimers dissociate into trigonal planar.

Dimerization is usually a strategy employed by small molecules to increase stability by sharing lone pair of electrons. In aluminum chloride (AlCl 3), each aluminum atom donates its three valence electrons to form bonds with three chlorine atoms.

May 25, 2024 · AlCl3 forms a dimer because of the presence of electron-deficient aluminum atom which attracts lone pairs on neighboring AlCl3 molecules, leading to the formation of coordinate bonds.

A lC l 3 exists as a dimer through halogen bridged bonds. It is an electron deficient species. In order to complete the octet of aluminium, the molecule dimerises to form A l 2 C l 6 in which electrons are added to aluminium octet through coordinate bond by chlorine atom.

In order to complete aluminium's valence electron shell two AlCl3 molecules dimerise. A chlorine atom from each of the two molecules forms a dative covalent bond with one of its lone electron pairs to the aluminium centre making the molecule Al2Cl6. AlCl3 has a trigonal planar structure.