Hydrothermal syntheses and structural characterizations of organic-inorganic hybrid materials of the M(ii)-ligand/vanadium oxide system (M(ii) = Mn(ii), Cu(ii) and Zn(ii); Ligand = 2,2′-bipyridine and 1,10-phenanthroline)

Three organic-inorganic hybrid compounds [Mn(bpy)V(bpy)V₃O ₁₁] (bpy = 2,2′-bipyridine) (1), [Cu(bpy)V₂O ₆] (2) and [Zn(phen)₃][V₂O₆] ·10H₂O (phen = 1,10-phenanthroline) (3) have been synthesized hydrothermally. Single crystal X-ray diffraction analyses revealed that compound 1 is the first example of bpy units coordinating to different transition metals in one molecule. Compound 2 is a new isomer of [Cu(bpy)V₂O ₆] which was named the γ-isomer by us. In compound 3, a 2-D water sheet with big holes filled by the "naked" [V₄O ₁₂]^4- clusters is found.