Sandwich Lutetacyclopentadiene with the Coordination of Lithium to the Diene Unit: Synthesis, Structure, and Transformation

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• 作者：Ling Xu ; Yang Wang ; Yu-Chen Wang ; Zitao Wang ; Wen-Xiong Zhang ; Zhenfeng Xi
• 刊名：Organometallics
• 出版年：2016
• 出版时间：January 11, 2016
• 年：2016
• 卷：35
• 期：1
• 页码：5-8
• 全文大小：320K
• ISSN：1520-6041

文摘

The sandwich lutetacyclopentadiene 2 can be obtained in high yield by the 1:1 reaction of the 1,4-dilithio-1,3-butadiene 1 with [Cp₂LuCl]. Single-crystal X-ray diffraction of 2 reveals it as a contact ion pair with the coordination of lithium to the diene unit. This coordination mode is rare in metallacyclopentadiene chemistry. Further transformation of 2 with the inorganic salt KF and crown ethers leads to the formation of sandwich lutetacyclopentadienes 3 and 5 as separated ion pairs and of 4 as a one-dimensional coordination polymer.