A Keggin-type Arsenotungstate Anion-supported Transition Metal Complex: Hydrothermal Synthesis and Characterization of [Fe(2,2-bipy)3]1.5[AsWVI10WV2O40Fe(2,2
نویسندگان
چکیده
A Keggin-type arsenotungstate anion-supported iron-bipyridine complex, [Fe(2,2′-bipy)3]1.5[AsWVI10WV2O40Fe(2,2′-bipy)2(H2O)] · 0.25H2O, has been hydrothermally synthesized and characterized by IR and ESR spectra, TG-DTA analysis, and single crystal X-ray diffraction. Each structural unit of the title compound consists of one [AsWVI10WV2O40Fe(2,2′-bipy)2(H2O)]3− heteropolyanion, one and a half [Fe(2,2′-bipy)3]2+ cations, and a quarter of an H2O molecule. In the heteropolyanion the [Fe(2,2′-bipy)2(H2O)]2+ unit is covalently bonded to the reduced Keggin polyoxoanion [AsWVI10WV2O40]5−. The complex is monoclinic, space groupC2/cwith a = 46.8079(13), b = 14.3990(4), c = 26.1085(8) Å, β = 90.00(5)◦ , Z = 8, Dc = 3.10 g/cm3.
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