Summary
From the reaction systems,B-V2O5-HClO4-H2O andB-V2O5-H2O, whereB is benzylamine (Bz), imidazole (Im) or pyridine (Py), eight new compounds were synthesized: at 20°C, the metavanadate and decavanadates of composition (BzH)VO3, (BzH)6V10O28·3H2O, (ImH)6V10O28·2H2O, (PyH)6V10O28·2H2O, (ImH)4H2V10O28·2H2O and (PyH)4H2V10O28·3H2O, and at 60°C, the hexavanadates of composition (ImH)2V6O16·H2O and (PyH)2V6O16·H2O. ThepH ranges of solutions the polyvanadates can be isolated from, were estimated. The compounds prepared were characterized by chemical analysis and IR spectroscopy. The synthesis of deuterated analogues allowed to assign the IR bands corresponding to vibrations of water in the spectra of deca- and dihydrogendecavanadates and to V-OH vibrations in the spectra of dihydrogendecavanadates.
Zusammenfassung
Aus dem ReaktionssystemB-V2O5-HClO4-H2O undB-V2O5-H2O [B=Benzylamin (Bz), Imidazol (Im) oder Pyridin (Py)] wurden acht neue Verbindungen synthetisiert: bei 20°C entstanden die Metavanadate und Decavanadate der Zusammensetzung (BzH)VO3, (BzH)6V10O28·3H2O, (ImH)6V10O28·2H2O, (PyH)6V10O28·2H2O, (ImH)4H2V10O28·2H2O und (PyH)4H2V10O28·3H2O, bei 60°C entstanden die Hexavanadate (ImH)2V6O16·H2O und (PyH)2V6O16·H2O. DiepH-Bereiche, innerhalb derer Polyvanadate isoliert werden können, wurden abgeschätzt. Die Verbindungen wurden mittels chemischer Analyse und IR-Spektroskopie charakterisiert, wobei die Synthese deuterierter Analoga die Zuordnung von Banden unterstützte.
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Suchá, V., Sivák, M. & Schwendt, P. Benzylammonium, imidazolium and pyridinium polyvanadates — Synthesis and characterization. Monatsh Chem 124, 809–814 (1993). https://doi.org/10.1007/BF00816403
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DOI: https://doi.org/10.1007/BF00816403