Polymerization of m-NH2C6H4COO anions in the intercalation compounds of aluminium hydroxide [LiAl2(OH)6][m-NH2C6H4COO]·nH2O

The intercalation compounds of aluminium hydroxide [LiAl2(OH)6][NH2C6H4COO]·nH2O containing aminobenzoic anions are synthesized for the first time. When heated in air, the intercalate containing m-aminobenzoic acid anions undergoes polymerization in the interlayer space, resulting in the formation of polymeric macromolecules. The product is investigated by means of XRD, IR and Raman methods, ESR and optical spectroscopy. A polymerization mechanism is proposed that includes the diffusion of oxygen molecules through the system of micropores in the interlayer space of the intercalate into the contact region of two anions, oxidation of anions and the formation of macromolecules. The character of the orientation of macromolecules in the interlayer space of polymerization product is considered.