p-Sulfonatocalixarenes with three of the lower rim hydroxyl groups substituted with N′-cyanocarbamimidate groups crystallizes in the 1,3-alternate conformation rather than the common cone conformation for unsubstituted calixarenes, which also results in departure from the common bilayer arrangement of sulfonated calixarenes. The new calixarene formed via reaction of the phenolic moieties of the p-sulfonatocalixarene with the dicyanamide anion derived from an ionic liquid with an imidazolium cation. © 2014 the Partner Organisations.
Ling, I., Skelton, B., Sobolev, A., Alias, Y., & Raston, C. L. (2014). Manipulating the conformation and interplay of p-sulfonated calixarenes by lower rim tri-substitution with N′-cyanocarbamimidate groups. CrystEngComm, 16(23), 5159-5164. https://doi.org/10.1039/c4ce00336e