Stepwise Formation of a Molecular Square with Bridging NH,O-Substituted Dicarbene Building Blocks

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• 作者：Fabian M. Conrady ; Roland Fr枚hlich ; Christian Schulte to Brinke ; Tania Pape ; F. Ekkehardt Hahn
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：August 3, 2011
• 年：2011
• 卷：133
• 期：30
• 页码：11496-11499
• 全文大小：773K
• 年卷期：v.133,no.30(August 3, 2011)
• ISSN：1520-5126

文摘

The 尾,尾鈥?bis(triisopropylsiloxy)phenyl-1,4-diisocyanide 3 and [Ir(Cp*)Cl₂]₂ were used for the stepwise assembly of the [Ir(Cp*)Cl] cornered molecular square [6](Cl)₄. Synthesis of the tetrakis(diisocyanide) bridged molecular square [Ir(Cp*)Cl(3)]₄(BF₄)₄ [5](BF₄)₄ followed by cleavage of the O鈥揝i(i-Pr)₃ bonds of the diisocyanide bridges with HCl/i-PrOH led to an intramolecular attack of the liberated hydroxyl groups at the isocyanide carbon atoms with formation of molecular square [6](Cl)₄ featuring four dicarbene linkers.