Compound 2 exhibits the usual structural features found in neutral THF-aluminum
bisphenoxides adducts whereas the ionic compound 1 consists of a cationic octahedral aluminum dichloride
moiety, [Al(THF)4(Cl)2], and an anionic di-bisphenoxide aluminate fragment [Al(mcmip)2] containing two
2,2′-methylenebis(4-chloro-3-methyl-6-(isopropyl)phenol) ligands.