A novel sandwich polyoxometalate linked by mixed RE/TM interlayer: [Fe(phen)(3)](2)[As2W18Fe2{Y(OH2)(2)}(2)O-68]center dot 6.5H(2)O

作者：Wang Jingping; Wang Wei; Niu Jingyang^*

来源：Journal of Molecular Structure, 2008, 873(1-3): 29-34.

DOI：10.1016/j.molstrue.2007.03.003

• polyoxometalates
• sandwich-type
• mixed interlayer
• hydrothermal synthesis

A novel sandwich polyoxometalate, [Fe(phen)(3)](2)[As2W18Fe2{Y(H2O)(2)}(2)O-68]center dot 6.5H(2)O 1, (phen = 1, 10-phenanthroline), has been hydrothermally synthesized and characterized by elemental analyses, IR(25 similar to 650 degrees C), single-crystal X-ray diffraction, ESR spectroscopy and thermal analyses (TG-DTA). The crystallographic analysis reveals that the dimeric polyanion, [As2W18Fe2{Y(OH2)(2)}(2)O-68](6-), are constructed from two [B-AsW9O34](9-) fragments linked by two Y3+ ions and two Fe3+ ions. The ESR spectra exhibit that the high spin state and the low spin state of Fe(III) coexist in the title compound.

• 出版日期2008-2-17
• 单位河南大学