C-H activation of 2,4,6-triphenylphosphinine: unprecedented formation of cyclometalated [(P^C)Ir(III)] and [(P^C)Rh(III)] complexes |
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| Authors: | Broeckx Leen E E Lutz Martin Vogt Dieter Müller Christian |
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| Affiliation: | Department of Chemical Engineering and Chemistry, Laboratory of Homogeneous Catalysis and Coordination Chemistry, Eindhoven University of Technology, Eindhoven, The Netherlands. |
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| Abstract: | An unprecedented C-H activation of 2,4,6-triphenylphosphinine by Ir(III) and Rh(III) has been observed. Time-dependent (31)P{(1)H} NMR spectroscopy gave insight into the cyclometalation reaction and the corresponding coordination compounds were characterized by means of X-ray crystallography. In contrast, 2,4,6-triphenylpyridine does not show any ortho-metalation, demonstrating a remarkable difference in reactivity between these two structurally related aromatic heterocycles. |
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