піразолін

MgFe2O4 nanoparticle ferrites were synthesized by combustion technique using pure ferric nitrate and magnesium nitratecarbonate. The magnetically separable MgFe2O4 MNP’s were found to be hyper active catalyst for the synthesis of a wide range of biologically active five and six-membered heterocyclic moieties at refluxing conditions. Reaction times are lowest in comparison to all reported in literature with excellent yields. Strong electron pull of Fe3+ is responsible for its hyper activity, which has been substantiated by substitution of Fe3+ by other trivalent metal ions.

A new route to synthesize new nanosized mixed ligand complexes of Zr(IV) have been investigated by the reaction of zirconium(IV) chloride with 3(2'-hydroxyphenyl)-5-(4-substituted phenyl)pyrazolines and ammonium salts of dithiophosphate, which after being treated with H2S gas acts as a precursor for ZrS2. These complexes have been examined for crystalline/amorphous nature through XRD. The morphology of the complexes was studied by employing XRD which shows that all the complexes are amorphous solid.