| Abstract: | The heteropolytungstate Na9{Na(H2O)2}3{Cu(H2O)}3(BiW9O33) 42H2O is obtained by the reaction of Na2WO4·2H2O, Bi(NO3)3 · 5H2O with CuCl2 · 2H2O at pH≠6. The structure and chemical composition are determined by X‐ray diffraction analysis and elemental analysis. The crystal data and main structure refinement are: a = 1.410(3) nm, b=2.338(5) nm, c=3.173(6) nm, β=98.06(4)°. V= 10.354(35) nm3. monoclinic crystal system, space group: C2/c, Z = 4, R1= 0.0471. wR2 = 0.0642 I>2σ(I)]. R1= 0.1371, wR2 = 0.0868 (all data). (Na(H2O)2}3{Cu(H2O)}3W9O33)2]9– has D34 symmetry. IR, UV‐vis spectra, TG curve and magnetic property of the complex were also discussed. The compound exhibits an antiferromagnetic coupling with J= ‐8.08 cm?1 and g =2.21. |
