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Employing Aryl‐Linked Bis‐mesoionic Carbenes as a Pincer‐Type Platform to Access Ambient‐Stable Palladium(IV) Complexes
Author(s) -
Yan Xuechao,
Wang Haiying,
Guo Shuai
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201911180
Subject(s) - mesoionic , pincer movement , carbene , palladium , reactivity (psychology) , aryl , chemistry , ligand (biochemistry) , combinatorial chemistry , pincer ligand , catalysis , medicinal chemistry , polymer chemistry , organic chemistry , medicine , biochemistry , alkyl , alternative medicine , receptor , pathology
The study of palladium(IV) species has great implications for Pd II /Pd IV ‐mediated catalysis. However, most of the Pd IV complexes rapidly decompose under ambient conditions, which makes the isolation, characterization and further reactivity study very challenging. The reported ancillary ligand platforms to stabilize Pd IV species are dominated by chelating N‐donors such as bipyridines. In this work, we present two Pd IV complexes with scarcely used C‐donors as the supporting platform. The anionic aryl donor and MIC (MIC=mesoionic carbene) are combined in a [CC′C]‐type pincer framework to access a series of ambient‐stable Pd IV tris(halido) complexes. Their synthesis, solid‐state structures, stability, and reactivity are presented. To the best of our knowledge, the work presented herein reports the first isolated Pd IV –MIC as well as the first Pd IV carbene‐based aryl pincer.