[sigma]-[pi] Continuum in Indole-Palladium(II) Complexes

The intrinsic features of (hetero-arene)-metal interactions have been elusive mainly because the systematic structure analysis of non-anchored hetero-arene-metal complexes has been hampered by their labile nature. We report successful isolation and systematic structure analysis of a series of non-an...

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Bibliographic Details
Published in:Angewandte Chemie 2016-04, Vol.128 (17), p.5408
Main Authors: Yamamoto, Koji, Kimura, Seita, Murahashi, Tetsuro
Format: Article
Language:ger
Subjects:
Chemistry
Coordination compounds
Indoles
Metal complexes
Metals
Palladium
Structural analysis
Online Access:Get full text
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Summary:The intrinsic features of (hetero-arene)-metal interactions have been elusive mainly because the systematic structure analysis of non-anchored hetero-arene-metal complexes has been hampered by their labile nature. We report successful isolation and systematic structure analysis of a series of non-anchored indole-palladium(II) complexes. It was revealed that there is a σ-π continuum for the indole-metal interaction, while it has been thought that the dominant coordination mode of indole to a metal center is the Wheland-intermediate-type σ-mode in light of the seemingly strong electron-donating ability of indole. Several factors which affect the σ- or π-character of indole-metal interactions are discussed.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.201601992