Inclusion complexes of coumarin in cucurbiturils.
Coumarin was found to form stable inclusion complexes with cucurbiturils. In the presence of cucurbit[7]uril (CB[7]), 1 : 1 inclusion complexes were observed in aqueous solution, as monitored by (1)H NMR and UV-visible absorption spectroscopies, and further supported by ab initio calculations, whereas with cucurbit[8]uril (CB[8]) a solid phase 1 : 2 host : guest complex was found in a single crystal X-ray diffraction structure determination.
Wang
Ruibing
R
Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, ON K1A0R6, Canada. ruibing.wang@nrc.ca
Bardelang
David
D
Waite
Mélanie
M
Udachin
Konstantin A
KA
Leek
Donald M
DM
Yu
Kui
K
Ratcliffe
Christopher I
CI
Ripmeester
John A
JA