Abstract
Calix[6]arene formed an endo-complex with piperidine and its inclusion properties were investigated by NMR spectroscopy and X-ray crystallography. Especially, the DOSY spectrum showed that piperidine formed a unique complex with calix[6]arene.
Acknowledgements
The authors are grateful to Professor S. S. Lee and Mr J. B. Suh at Gyeongsang National University and Professor M. S. Lah at Hanyang University for X-ray crystallography analysis. Korea Basic Science Institute, S. Korea is acknowledged for financial support (KBSI-2006-N25053).