POLYMERIC MATERIAL BASED ON POLYOXOTUNGSTATE, POLYOXOMOLIBDATE AND METAL-ORGANIC SUB-UNITS: SYNTHESES AND CHARACTERIZATION

Abstract

Two   hybrid  compounds   were  synthesized  under  hydrothermal  conditions  and  characterized  by  single crystal  X-ray  diffraction,  FT-IR  and  elemental  analysis.  Compound  1 ([[NH4]2[{Cu(OH2)2(en)2}][{Cu(en)2}3H2W12O42]·7H2O]n)  consists  of  2D  polymer  framework  stacks.  The polymer  framework  in  1  extends  through  coordination  bonds  between  the  peripheral  oxo  groups  of  the paradodecatungstate  B  cluster  and  metal-organic  complexes  [Cu(en)2]2+.  Crystalline  structure  of  compound  2 ([Mo8O26Ag4(4,4'-bipi)6(H2O)2]n)  consists  of  1D  polymeric  chains  of  coordination  complexes,  [Ag(4,4'- bipi)3H2O], connected through terminal oxygen atoms of β-octamolybdate cluster, resulting in a 3D network.