Abstract
The electronic structure and stability of the encapsulated complexes of 5-fluorouracil (5FU) into cucurbit[n = 5–8]uril (CB[n]) in water were studied by means of PM6 and DFT computations. Among cucurbit[n]urils (n = 5–8) with different inner sizes, 5FU complexes with cucurbit[n = 6, 7]uril were more stable than those with cucurbit[n = 5, 8]uril. According to DFT computations, 5FU complex with the doubly inverted cucurbit[6]uril was the most stable and the mono- and doubly inverted isomers of CB[7] can also form relatively stable complexes.
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Sin, KR., Ko, SG., Kim, CJ. et al. Quantum chemical investigation on interaction of 5-fluorouracil with cucurbiturils. Monatsh Chem 151, 721–727 (2020). https://doi.org/10.1007/s00706-020-02599-1
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DOI: https://doi.org/10.1007/s00706-020-02599-1