Reactions of iridium bis(phosphinite) pincer complexes with protic acidsстатья
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Дата последнего поиска статьи во внешних источниках: 28 июля 2014 г.
Аннотация:Iridium pincer complexes [C6H3-2,6-(O-PBu-t2)2]Ir(H)Cl (10) and [4-EtOOC-C6H2-2,6-(O-PBu-t 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-(O-PBu-t2)-6-(O-P(Bu-t)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-(OPBu-t2)-6-(O-P(Bu-t)CMe2CH2)]Ir(L)Cl (14, L = CO; 15, L = CNBut). The structure of compound 14 was established by Xray diffraction analysis.
Key words: cyclometallation, iridium hydrides, pincer complexes, protic acids, Xray dif
fraction analysis.