Synthesis and Structure of a CuI3S Cluster Unsupported by Other Bridging Ligands

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• 作者：Junjie Zhai ; Michael D. Hopkins ; Gregory L. Hillhouse
• 刊名：Organometallics
• 出版年：2015
• 出版时间：October 12, 2015
• 年：2015
• 卷：34
• 期：19
• 页码：4637-4640
• 全文大小：304K
• ISSN：1520-6041

文摘

The facile synthesis of a {LCu^I}₃(渭₃-S) cluster supported by monodentate N-heterocyclic carbene ligands has been accomplished through an approach in which two-coordinate (NHC)Cu⁺ centers are installed sequentially on a sulfido ligand. The reaction between (IPr)CuCl (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) and S(SiMe₃)₂ yields (IPr)Cu(SSiMe₃) (2). Treatment of 2 with [(IPr)Cu(NCMe)][BF₄] produces the dicopper cluster [{(IPr)Cu}₂(渭-SSiMe₃)][BF₄] (3[BF₄]), which undergoes subsequent reaction with (IPr)CuF to afford [{(IPr)Cu}₃(渭₃-S)][BF₄] (1[BF₄]) in high yield. The X-ray crystal structure of 1[BF₄] establishes it as a rare example of a Cu^I_n(渭_n-S)L_m cluster, and the first that is not also supported by other bridging ligands.