The dimeric iron carbonyl [CpFe(CO)2]2 and the iodosilanes tBu2RSiI were obtained from the reaction of [CpFe(CO)2]I with the silanides Na[SiRtBu2] (R = Me, tBu) in THF. By the reactions of [CpFe(CO)2]I and Na[SiRtBu2] (R = Me, tBu) the disilanes tBu2RSiSiRtBu2 (R = Me, tBu) were additionally formed using more than one equivalent of the silanide. In this context it should be noted that reduction of [CpFe(CO)2]2 with Na[SitBu3] gives the disilanes tBu3SiSitBu3 along with the sodium ferrate [(Na(18-crown-6))2Cp][CpFe(CO)2]. The potassium analogue [(K(18-crown-6))2Cp][CpFe(CO)2] (orthorhombic, space group Pmc21), however, could be isolated as a minor product from the reaction of [CpFe(CO)2]I with [K(18-crown-6)][PtBu2BH3]. The reaction of [CpFe(CO)2]2 with the potassium benzophenone ketyl radical and subsequent treatment with 18-crown-6 yielded the ferrate [K(18-crown-6)][CpFe(CO)2] in THF at room temperature. The crown ether complex [K(18-crown-6)][CpFe(CO)2] was analyzed using X-ray crystallography (orthorhombic, space group Pna21) and its thermal behaviour was investigated.
二聚
羰基铁[CpFe(CO)2]2 和
碘硅烷 tBu2RSiI 是由[CpFe(CO)2]I 与
硅烷 Na[SiRtBu2](R = Me,tBu)在 THF 中反应得到的。通过[CpFe(CO)2]I 和 Na[SiRtBu2] (R = Me, tBu)的反应,使用一个以上当量的
硅烷还可以生成二
硅烷 tBu2RSiSiRtBu2 (R = Me, tBu)。在这方面需要注意的是,用 Na[SitBu3] 还原 [CpFe(CO)2]2,可以得到二
硅烷 tBu3SiSitBu3 以及
铁酸钠 [(Na(18-crown-6))2Cp][CpFe(CO)2]。然而,
钾类似物[(K(18-crown-6))2Cp][CpFe(CO)2](正交,空间群 Pmc21)可以作为次要产物从[CpFe(CO)2]I 与[K(18-crown-6)][PtBu2BH3]的反应中分离出来。在室温下,[CpFe(CO)2]2 与
二苯甲酮钾酮基反应,然后用 18-crown-6 处理,在 THF 中生成了
铁酸盐[K(18-crown-6)][CpFe(CO)2]。
冠醚复合物 [K(18-crown-6)][CpFe(CO)2] 利用 X 射线晶体学(正交,空间群 Pna21)进行了分析,并对其热行为进行了研究。