取代二茂铁多碘化合物的合成、表征和穆斯堡尔谱研究

Studies on the Synthesis, Characterization and Mbssbauer Spectrometry of Substituted Ferrocene Polyiodides

合成了一系列新的取代二茂铁多碘化合物,通式为[(RC_5H_4)(R′C_5H_4)Fe]·I_x。元素分析表明,取代基不同时,二茂铁与碘可以整比或非整比结合。^(57)Fe穆斯堡尔谱和红外光谱的研究表明,因取代基不同,二茂铁可以完全地或部分地被碘氧化。

A Series of new substituted ferrocene polyiodides with general formula of [(RC5H4)(R'C5H4)Fe3.L were synthesized.The elemental analysis showed that substituted ferrocenes with Et, Ac, and ph as R and R' groups give polyiodides with integer ratios for ferrocene to iodine while ferrocenes with MeCH (OH) substituents give polyiodides with non-integer ratios for ferrocene to iodine. The 57Fe Mossbauer study indicated the oxidation of ferrocenes in these polyiodides to [FcH] + cations with reduced IS values compared to the original-ferrocenes and much reduced (even reached to zero) QS values. The IR spectra of these polyiodides also show the presence of [FcH] + type cations with the characteristic absorptions at 400-500cm-1 (multiplet), the shift of 800-850cm-1 (strong) and characteristic absorptions for substituents to higher wave-numbers.