Reactions of iridium bis(phosphinite) pincer complexes with protic acids |
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Authors: | A. V. Polukeev S. A. Kuklin P. V. Petrovskii A. S. Peregudov F. M. Dolgushin M. G. Ezernitskaya A. A. Koridze |
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Affiliation: | 1.A. N. Nesmeyanov Institute of Organoelement Compounds,Russian Academy of Sciences,Moscow,Russian Federation;2.Department of Chemistry,I. Javakhishvili Tbilisi State University,Tbilisi,Georgia |
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Abstract: | Iridium pincer complexes [C6H3-2,6-(OPBut 2)2]Ir(H)Cl (10) and [4-EtOOCC6H2-2,6-(OPBut 2)2]Ir(H)Cl (11) react with protic acids undergoing metallation of one of the tert-butyl groups to form double cyclometallated products [4-R-C6H2-2-(OPBut 2)-6-(OP(But)CMe2CH2)]IrCl (12, R = H; 13, R = COOEt), which are stable in air. Complex 12 reacts with CO and ButNC giving the corresponding 18-electron complexes [C6H3-2-(OP-But 2)-6-(OP(But)CMe2CH2)]Ir(L)Cl (14, L = CO; 15, L = CNBut). The structure of compound 14 was established by X-ray diffraction analysis. |
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