Synthesis and characterization of new vanadium oxide phases incorporating polyoxo ligands

A variety of novel molecular (0-dimensional), 1-dimensional chains, 2-dimensional layers and 3-dimensional framework materials have been successfully synthesized and characterized. Chapter I provides the introduction and describes the wide spread need of new generation materials to cater the needs of the industry and society.; Synthesis and complete characterization of novel molecular complexes [VIVOSO₄(H₂O)₄]· SO ₄· [H₂N(C₂H₄)₂NH ₂] and [VIVOSO₄(H₂O)₄]· SO₄· [HN(C₂H₄)₃NH] have been described in the chapter II. These molecules are attractive precursors for making extended solids with desired properties.; Chapter III envelopes the synthesis and complete characterization of a new class of inorganic-organic hybrid materials characterized by −V−O−SO ₄− chains in [V₂O₂(OH) ₂SO₄)(2,2′-bipyridine)] and double −V−O−SO ₄− chains in [V₂O₂(SO₄) ₂(2,2′bipyridine)₂] separated by 2,2 ′-bipyridine organic ligand. New compounds [VIVOSO ₄(H₂O)₄]· SO₄· [H ₂N(C₂H₄)₂NH₂] and [V IVOSO₄(H₂O)₄]· SO₄· [HN(C₂H₄)₃NH] described in Chapter II have been used as precursors to prepare these new solids ([V₂O ₂(OH)₂ SO₄(2,2′-bipyridine)] and [V₂O₂(SO₄)₂(2,2′ -bipyridine)₂]. A new layered solid VO(OH)₂SO ₄· 2NH₄ intercalating NH₄+ has also been described.; Chapter IV describes the preparation of new open framework composites with large channels. These solids represent novel zeolitic materials composed of −V−O−V wires connected by robust organic ligands. A 2-dimensional solid composed of novel vanadium oxide (V₆O₁₄ 2−) layers intercalating doubly protonated DABCO (1,4-diazabicyclo[2.2.2] octane) cations and water molecules has also been described in this Chapter.