What Is The Structure Of Aluminium Bromide Hexahydrate?

Aluminium bromide hexahydrate is a hydrated form of the chemical compound aluminium bromide, with the chemical formula AlBr3·6H2O.

The structure of aluminium bromide hexahydrate is characterized by the presence of an octahedral AlBr3 core, which is surrounded by six water molecules (H2O) in a coordinated manner. The AlBr3 moiety consists of an aluminium atom (Al) that is covalently bonded to three bromine atoms (Br), forming a trigonal planar arrangement around the central Al atom. Each bromine atom shares a pair of electrons with the aluminium atom, resulting in three Al-Br covalent bonds.

The six water molecules in aluminium bromide hexahydrate are arranged such that four of them are located in the equatorial plane of the AlBr3 complex, while the remaining two water molecules occupy axial positions. The water molecules are coordinated to the AlBr3 core through hydrogen bonding interactions between the oxygen atoms of the water molecule and the Br or Al atoms of the AlBr3 complex.

Overall, the structure of aluminium bromide hexahydrate can be described as an octahedral complex in which an AlBr3 core is surrounded by six water molecules in a coordinated arrangement.