According to the above structure formula, each aluminium atom binds to three chlorine atoms co-conjugated and one chlorine atom is joined by a cohesive bond. Chlorine atoms form a tetrahedral shape around each aluminium atom.
The vapor density of anhydrous aluminium chloride decreases with the increase in heat and its formula becomes AlCl3 at about 800°C. Aluminium chloride is often represented by this formula. Anhydrous aluminium chloride merges with organic solvents such as: alcohol, acetone, ether and carbon tetrochloride due to the presence of cohesive binds and does not conduct electricity in the molten state.