Hydrothermal Synthesis Of Vanadium-containing Inorganic Organic Hybrid Materials, Structure And Nature Of The Study

The chemistry of transition metal vanadium is a specially active research field. The research of inorganic-organic hybrid polyoxovanadate has attracted much attention due to their redox, electronic, catalytic or magnetic properties. The synthesis, components, structures, and properties of these inorganic-organic hybrid polyoxovanadate are reviewed in this paper. Five bimetallic hybrid complexes and a six cappedα-keggin-type polyvanadate are prepared by mild hydrothermal technique and characterized by single crystal X-ray diffraction.1. Two Ag-V complexes VO₂(C7H₃O₄N)Ag(C₁₀H₈N₂)H₂O(1) and VO₂(C₇H₃O₄N)Ag(2) are synthesized. V atoms are both coordinated to pyridine-2,6-dicarboxylic acid ligand, and connected with Ag atoms via oxo and double-bond oxygen atoms of carboxyl. 1 formed a 1D structure and 2 formed a 2D structure.2. Two Cu-V complexes {Cu(phen)H₂O}{Cu(phen)}V₄O₇(OH)(PO₄)₃H₂O(3) and {Cu(phen)}₂(VO₂)₃(OH)(PO₄)₂(4) are synthesized. The two complexes are both 2D structures. There is a V4O4 cubic cluster and left and right helical chains in complex 3. The V-O-P chains are connected via Cu-phen units to form a 2D structure with 10-membered rings in complex 4.3. A Mn-V complex [C₄H₁₂N₂]₂Mn^II(H₂O)₂ (V^VO₂)₂(V^IV2O₂)(PO₄)₄(H₂O)₂(5) is synthesized. Complex 5 contains channels in three dimensions in which diprotonated piperazine ions and water molecules reside.4. A six cappedα-keggin-type polyvanadate (H₃dien)₂[(VO)6(V₁₂O₃₆)(PO₄)](PO₄)(6) is synthesized. Triprotonated triethylenediamine acted as compensating cations.