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)V3O11] (bpy = 2,2'-bipyridine) (1), [Cu(bpy)V2O6](2) and [Zn(phen)(3)][V2O6] . 10H(2)O (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)V2O6] which was named the gamma-isomer by us. In compound 3, a 2-D water sheet with big holes. filled by the naked [V4O12](4-) clusters is found.