Interaction of aniline and benzidine with layered solids M n+(UO2XO4) n − ·z H2O[M = H3O+, Cu2+, VO2+, Fe2+; X = P,As]

The layered acid solids of formula H₃OUO₂XO₄· 3 H₂O (X = As, P) intercalate aniline and benzidine arylamines, by protonation of the guest molecules. The intercalates maintain the original laminar structure.The insertion of aniline and benzidinein the metal derivativesM(UO₂XO₄)₂·n H₂O (M = Cu, VO, Fe) requires rather drastic conditions. Near and medium infrared spectra of intercalates in which M = VO²⁺ and Cu²⁺, indicate that the polymerization and/or oxidation of sorbed amines occurs; however, the guest-host reactions for Fe²⁺-derivatives are of the acid-base type.