Synthesis, spectroscopic characterization and electronic structure of some new Cu(I) carbene complexes |
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Authors: | Chinnappan Sivasankar Christina Baskaran and Ashoka G Samuelson |
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Institution: | (1) Department of Inorganic and Physical Chemistry, Indian Institute of Science, 560 012 Bangalore |
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Abstract: | Reaction of oligomeric Cu(I) complexes Cu(Μ-S-C(=NR)(O-Ar-CH3)]n with Lewis acids gave Cu(I) carbene complexes, which were characterized by1H and13C NMR spectroscopy. Cu(I) carbene complexes could be directly generated from RNCS, Cu(I)-OAr and Lewis acids; this method
can be used to prepare Cu(I) carbene complexes with different substitutents on the carbene carbon. The complexes were unreactive
towards olefins and do not undergo cyclopropanation. Electronic structure calculations (DFT) show that the charge on the carbene
carbon plays an important role in controlling the reactivity of the carbene complex. |
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Keywords: | Copper(I) carbene complex carbene complex synthesis Cu(I)-carbene electronic structure |
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