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本文合成了两个二茂铁基查耳酮系化合物3b—3eC_5H_5FeC_5H_4CO(CH=CH)_nC_6H_5(n=1,2,3,4)和6a—6cC_5H_5FeC_5H_4(CH=CH)_nCOC_6H_5(n=0,1,2)。为了研究这类三岔共轭体系的结构效应,我们用Mssbauer效应作为探针,研究了茂铁基Fe核周围的电子云分布情况,并用同系因子(1/α)~(2/N)考查了Mossbauer谱参数QS和IS的同系递变规律,结果表明3系中的茂铁基只起代基作用;6系中的茂铁基则为端基,3系中共轭链的增长引起QS值的减小,可能是诱导效应所致,并讨论了取代基的吸电子效应和茂环与铁核间距离对IS和QS值减小的影响。
In this paper, two ferrocenyl chalcone compounds 3b-3eC_5H_5FeC_5H_4CO (n = 1,2,3,4) and 6a-6cC_5H_5FeC_5H_4 (CH = CH) _nCOC_6H_5 (n = 0,1 ,2). In order to study the structural effect of this trifurcated conjugate system, we used the Mssbauer effect as a probe to investigate the distribution of electron clouds around the ferrocene-based Fe core and investigated with the same factor (1 / α) ~ (2 / N) The same series of Mossbauer spectral parameters QS and IS evolution, the results show that the 3-series of ferrocenyl only from the role of base; 6 Department of ferrocenyl end groups, 3 lines in the conjugate chain growth caused QS value , Which may be due to the induction effect. The effect of electron-withdrawing substituents and the distance between the metallocene and iron nucleus on the decrease of IS and QS values is also discussed.