A Luminescent Gold Ring That Flips Like Cyclohexane

Abstract

A chair of gold: Analogous to cyclohexane, the trinuclear gold ring [Au3(PAnP)3][ClO4]3 (PAnP=9,10-bis(diphenylphosphino)anthracene) shows a chair conformation and diastereotopic axial and equatorial phenyl rings. Variable temperature and 2D EXSY NMR studies reveal that the gold ring undergoes cyclohexane-like ring inversion (enantiomerization) in solution. In addition, the gold ring exhibits intense excimeric emission at room temperature. — = anthracene ring system in PAnP, ○ = ClO4−. Supporting information for this article is available on the WWW under http://www.angewandte.com or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.