Polyaluminum chloride
Aluminum chloride is an inorganic substance with the formula AlCl3, which is a compound of chlorine and aluminum. Aluminum chloride melting point, boiling point is very low, and will sublimate, as a covalent compound. Molten aluminum chloride does not conduct electricity, unlike most salts containing halogen ions (such as sodium chloride).
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Aluminum chloride is an inorganic substance with the formula AlCl3, which is a compound of chlorine and aluminum. Aluminum chloride melting point, boiling point is very low, and will sublimate, as a covalent compound. Molten aluminum chloride does not conduct electricity, unlike most salts containing halogen ions (such as sodium chloride).
AlCl3 is a "YCl3" structure, which is the densest stacking structure of Al3+ cube, while Al3+ occupies the adjacent tetrahedral Spaces of the densest packing frame of Br−. At melting, AlCl3 forms a volatile dimer, Al2Cl6, containing two three-center, four-electron chlorine Bridges. At higher temperatures, Al2Cl6 dimers dissociate to form planar triangular AlCl3, similar in structure to boron trifluoride (BF3).
Aluminum chloride is a white crystalline powder. Aluminum chloride vapor exists as a covalent dimer (Al2Cl6) when dissolved in a non-polar solvent or in a molten state. Soluble in water and many organic solvents. The aqueous solution is acidic. In the presence of aromatics, aluminum chloride mixed with aluminum can be used to synthesize di (aromatics) metal complexes. For example, chromium diphenyl is prepared by the synthesis of certain metal halides via Fischer-Hafner.
Keywords：
Aluminate cement, calcium aluminate powder, polyaluminium chloride
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