New iron(iii) complex of bis-bidentate-anchored diacyl resorcinol on a FeO nanomagnet: C-H bond oxygenation, oxidative cleavage of alkenes and benzoxazole synthesis.

We have synthesized a novel, bis-bidentate, covalently anchored, 4,6-diacetyl resorcinol (DAR) ligand on silica-coated magnetic FeO nanoparticles and the corresponding bi-metallic iron(iii) complex (FeO@SiO-APTESFeL). Both the chemical nature and the structure of the homogeneously heterogenized catalyst were investigated using physico-chemical techniques. The results obtained by XPS, XRD, FT-IR, TGA, VSM, SEM, TEM, EDX, ICP and AAS revealed a magnetic core, a silica layer and the grafting of a binuclear iron complex on the FeO@SiO-APTES, as well as its thermodynamic stability.