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首次测定了K_5SiFe(H_2O)W_(11)O_(39)·21H_2O和它的二聚体K_(12)O(SiFeW_(11)O_(39))_2·22H_2O的Mossbauer谱,并结合磁化率、XPS和红外光谱,证实了二聚体中Fe—O—Fe桥键含有d-pπ键,推测其阴离子结构为[SiW_(11)O_(39)FeOFeO_(39)W_(11)Si]~(12-).
The Mossbauer spectra of K_5SiFe (H_2O) W_ (11) O_ (39) · 21H_2O and its dimer K_ (12) O (SiFeW_ (11) O_ (39)) _2.22H_2O were determined for the first time. XPS and FTIR spectra confirmed that the d-pπ bond in Fe-O-Fe bridged dimer was presumed to be [SiW_ (11) O_ (39) FeOFeO_ (39) W_ (11) Si] 12-).