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Issue 16, 2017
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Supramolecular complexes of α,α′,δ,δ′-tetramethyl-cucurbit[6]uril binding with enantiomeric amino acids

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Abstract

The reaction of α,α′,δ,δ′-tetramethyl-cucurbit[6]uril (TMeQ[6]) with seven enantiopure amino acids (D,L-Gln; D,L-Met; D,L-Ser; D-Val) yields seven supramolecular assemblies under different conditions. Single-crystal X-ray diffraction analyses reveal that the seven supramolecular assemblies are classified into two structural types (inclusion and exclusion structures), which mainly depend on the length of the alkyl chain of the amino acids. In contrast, the reaction of TMeQ[6] with L-Val does not form any crystalline materials, suggesting that TMeQ[6] may be suitable for the separation of D-Val from its enantiomer.

Graphical abstract: Supramolecular complexes of α,α′,δ,δ′-tetramethyl-cucurbit[6]uril binding with enantiomeric amino acids

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Publication details

The article was received on 18 Feb 2017, accepted on 20 Mar 2017 and first published on 21 Mar 2017


Article type: Communication
DOI: 10.1039/C7CE00340D
CrystEngComm, 2017,19, 2168-2171

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    Supramolecular complexes of α,α′,δ,δ′-tetramethyl-cucurbit[6]uril binding with enantiomeric amino acids

    P. Shan, S. Tu, R. Lin, Z. Tao, J. Liu and X. Xiao, CrystEngComm, 2017, 19, 2168
    DOI: 10.1039/C7CE00340D

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