A Luminescent Gold Ring That Flips Like Cyclohexane

A Luminescent Gold Ring That Flips Like Cyclohexane

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 cyclo...

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Veröffentlicht in:Angewandte Chemie International Edition 2001-06, Vol.40 (11), p.2159-2162
Hauptverfasser: Yip, John H. K., Prabhavathy, Janardhana
Format: Artikel
Sprache:eng
Schlagworte:
conformations
fluxionality
gold
luminescence
NMR spectroscopy
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Zusammenfassung: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−.
ISSN:1433-7851
1521-3773
DOI:10.1002/1521-3773(20010601)40:11<2159::AID-ANIE2159>3.0.CO;2-X