p-tert-Butyl thiacalix[4]arenes functionalized at the lower rim by amide, hydroxyl and ester groups as anion receptors |
| |
Authors: | Stoikov Ivan I Yantemirova Alena A Nosov Roman V Rizvanov Ildar Kh Julmetov Ajdar R Klochkov Vladimir V Antipin Igor S Konovalov Alexander I Zharov Ilya |
| |
Affiliation: | A.M. Butlerov Chemical Institute, Kazan (Volga Region) Federal University, 420008 Kremlevskaya, 18, Kazan, Russian Federation. Ivan.Stoikov@mail.ru |
| |
Abstract: | New p-tert-butyl thiacalix[4]arenes differently substituted at the lower rim with amide, hydroxyl and ester groups were synthesized. Binding properties of the compounds toward some tetrabutylammonium salts n-Bu(4)NX (X = F(-), Cl(-), Br(-), I(-), CH(3)CO(2)(-), H(2)PO(4)(-), NO(3)(-)) were studied by UV spectroscopy. It was found that the stoichiometry of the complexes, generally, is 1 : 1, and the association constants are in the range of 10(3)-10(5) M(-1). The p-tert-butyl thiacalix[4]arenes containing secondary amide groups trisubstituted at the lower rim bind the studied anions most effectively. Selective receptors for fluoride and dihydrogen phosphate salts of tetrabutylammonium were found. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|