With heavier halides, the coordination numbers are lower. The opposite trihalides are dimeric or polymeric with tetrahedral four-coordinate aluminium facilities.[g] Aluminium trichloride (AlCl3) provides a layered polymeric structure down below its melting level of 192.four °C (378 °F) but transforms on melting to Al2Cl6 dimers. At increased temperatures These significantly dissociate... https://shedsandgarages23445.izrablog.com/37957013/the-ultimate-guide-to-aluminium-greenhouse