C-H activation of benzene by platinum(II) complexes with cyclometalated phosphine ligands |
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Authors: | Kyle A Grice |
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Institution: | Department of Chemistry, Box 351700, University of Washington, Seattle, WA 98195-1700, United States |
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Abstract: | The bulky phosphine ligands di-tert-butyl(1-naphthyl)phosphine (1) or di-tert-butyl(N-indolyl)phosphine (2) react at room temperature with (μ-SMe2)PtMe2]2. Coordination of the phosphine and C-H bond activation at an sp2 carbon of the ligand with the release of methane takes place to form the PC cyclometalated products (PC)PtMe(SMe2)] (3 or 4, respectively). The cyclometalated complexes 3 and 4 have both been characterized by X-ray crystallography. Complexes 3 and 4 were each observed to undergo intermolecular activation of arene C-H bonds. Upon thermolysis in benzene, complexes 3 and 4 react to eliminate methane and yield isolable platinum(II)-phenyl complexes. |
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Keywords: | Platinum complexes Cyclometalation Phosphine C-H activation |
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