BENZYLAMMONIUM, IMIDAZOLIUM AND PYRIDINIUM POLYVANADATES - SYNTHESIS AND CHARACTERIZATION

From the reaction systems, B-V2O5-HClO4-H2O and B-V2O5-H2O, where B is benzylamine (Bz), imidazole (Im) or pyridine (Py), eight new compound s were synthesized: at 20-degrees-C, the metavanadate and decavanadate s of composition (BzH)VO3, (BzH)6V10O28.3H2O, (ImH)6V10O28.2H2O, (PyH) 6V10O28-2H2O, (ImH)4H2V10O28.2H2O and (PyH)4H2V10O28.H2O, and at 60-de grees-C, the hexavanadates of composition (ImH)2V6O16.H2O and (PyH)2V6 O16-H2O. The pH ranges of solutions the polyvanadates can be isolated from, were estimated. The compounds prepared were characterized by che mical analysis and IR spectroscopy. The synthesis of deuterated analog ues allowed to assign the IR bands corresponding to vibrations of wate r in the spectra of deca- and dihydrogendecavanadates and to V-OH vibr ations in the spectra of dihydrogendecavanadates.