Hydrothermal synthesis of two Anderson POM-supported transition metal organic–inorganic compounds

Abstract: Two isostructural compounds based on Anderson polyoxoanions, [Cu(phen)]2[CrMo6H5O24] (1) and [Cu(phen)]2[AlMo6H5O24] (2) (phen=1,10-phenaanthroline), have been hydrothermally synthesized and characterized by IR, XPS, EPR spectra, TG analyses, magnetic susceptibility, and single-crystal X-ray diffraction. Compounds crystallize in the monoclinic space group P2(1)/n with a =5.66710(10)Å, b =21.3723(5)Å, c =14.7092(3)Å, β =98.10(10)°, V =1763.79(6)Å3, R 1 =0.0240, Z =2 and GOF =1.140 for 1, and in the monoclinic space group P2(1)/n with a =5.6641(3)Å, b =21.3346(13)Å, c =14.6909(9)Å, β =97.9120(10)°, V =1758.37(18)Å3, R 1 =0.0529, Z =2 and GOF =0.0994 for 2. Single crystal X-ray diffraction reveals that the compounds 1 and 2 are both built up of Anderson polyoxoanions and copper–phen complexes. The structural feature of 1 and 2 is that the Anderson polyoxoanions act as multidentate ligands linking copper–phen complex to form 1D chains. Compounds 1 and 2 not only represent new Anderson-type POM-supported transition metal organic–inorganic hybrid compounds with extend structure, but also verify the feasibility of constructing these compounds through hydrothermal methods. [Copyright &y& Elsevier]