Affordable Access

Unexpected metal-mediated oxidation of hydroxymethyl groups to coordinated carboxylate groups by bis-cyclometalated iridium(III) centers

Authors
  • Beyer, Beatrice
  • Ulbricht, Christoph
  • Winter, Andreas
  • Hager, Martin D
  • Hoogenboom, Richard
  • Herzer, Nicole
  • Baumann, Stefan O
  • Kickelbick, Guido
  • Görls, Helmar
  • Schubert, Ulrich S
Publication Date
Jan 01, 2010
Source
Ghent University Institutional Archive
Keywords
Language
English
License
Unknown
External links

Abstract

Two different procedures of the ‘click’ reaction were applied to synthesize a library of 1-aryl- and 4-aryl-functionalized 1H-[1,2,3]triazoles as new ligands for phosphorescent iridium(III) complexes. For three examples, single crystal X-ray analysis was carried out and the structural properties were discussed. The reactive m-dihydroxy-bridged iridium(III) precursor complex [(ppy)2Ir-m-(OH)]2 (ppy = 2-phenylpyridinato) was prepared for the complexation of the herein described ligands. During these complexation studies, an unexpected metal-assisted oxidation pathway was observed for the hydroxymethyl-substituted 1-aryl-1H-[1,2,3]triazoles 2d–f leading selectively to a [carboxylate-N3,O]-coordination of the ligands to the iridium(III) centers.

Report this publication

Statistics

Seen <100 times