ONO Dianionic Pincer-Type Ligand Precursors for the Synthesis of σ,π-Cyclooctenyl Iridium(III) Complexes: Formation Mechanism and Coordination Chemistry
作者:Duc Hanh Nguyen、Ingo Greger、Jesús J. Pérez-Torrente、M. Victoria Jiménez、F. Javier Modrego、Fernando J. Lahoz、Luis A. Oro
DOI:10.1021/om400767d
日期:2013.12.9
Br) have been prepared from [Ir(μ-OMe)(cod)]2 and the corresponding 4-substituted pyridine-2,6-dicarboxylic acids (H2pydc-X) or, alternatively, from their lithium salts (X = H) and [Ir(cod)(CH3CN)2]PF6. Deuterium labeling studies in combination with theoretical calculations have shown that formation of 1 involves a metal-mediated proton transfer in the reactiveintermediate [Ir(κ2-Hpydc)(cod)], through
Unsaturated iridium pyridinedicarboxylate pincer complexes with catalytic activity in borylation of arenes
作者:Duc Hanh Nguyen、Jesús J. Pérez-Torrente、Laura Lomba、M. Victoria Jiménez、Fernando J. Lahoz、Luis A. Oro
DOI:10.1039/c1dt11046b
日期:——
Unsaturated σ,π-cyclooctenyl and hydrido Ir(III) complexes bearing an unusual tridentate dianionic ONO pincer-type ligand have been straightforwardly obtained from 2,6-pyridinedicarboxylic acid and standard Ir(I) starting materials. These complexes efficiently catalyzed the arene C–H borylation under thermal conditions.