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在氢化钠存在下，用乙酰基二茂铁与正辛酸乙酯进行缩合反应，合成了标题化合物ＦｅＣＯＣＨ_２ＣＯＣ_７Ｈ_（１５）（Ｆｃ＝Ｃ_５Ｈ_５ＦｅＣ_５Ｈ_４）．Ｘ射线衍射测定其晶体学数据为：Ｃ_（２０）Ｈ_（２６）ＦｅＯ_２，空间群Ｐ２_１／ｎ，ａ＝０．５７９０（１）ｎｍ，ｂ＝４．１６３４（４）ｎｍ，ｃ＝０．７６３５（１）ｎｍ，β＝１０１．３９（１）°，Ｚ＝４．最终的偏离因子Ｒ＝０．０５０．结构分析表明，该化合物分子以烯醇式形式存在，通过分子内氢键，形成六元环，环中Ｏ…Ｈ氢键距离为０．１４６ｎｍ．β－二羰基中与正庚基相连接的羰基易于烯醇化。
The title compound FeCOCH_2COC_7H_ (15) (Fc = C_5H_5FeC_5H_4) was synthesized by the condensation reaction of acetyl ferrocene and ethyl n-octanoate in the presence of sodium hydride. The crystallographic data determined by X-ray diffraction are: C 20 H 26 FeO 2, space group P2_1 / n, a = 0.5790 (1) nm, b = 4.1634 (4) nm, c = 0. 7635 (1) nm, β = 101.39 (1) °, Z = 4. The final deviation factor R = 0.050. The structural analysis shows that the compound exists in enol form and forms a six - membered ring with intramolecular hydrogen bonding. The O · H hydrogen bond distance in the ring is 0.146 nm. The carbonyl group attached to the n-heptyl group in β-dicarbonyl is susceptible to enolase.