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Information × Registration Number 0211U001093, 0108U001269 , R & D reports Title Synthesis, structure, propeties of calyx[4]arenas, containing the moieties of imidazoles and azacrown-ethers popup.stage_title Head Gren A,I., Registration Date 18-01-2011 Organization A.V.Bogatsky Physico-Chemical Institute of the National Academy of Sciences of Ukraine popup.description2 Object of investigations - structure, complexing abilities of the 5,11,17,23-tetra-tert-butylcalix[4]arenes with [(benzymidazolyl-2-alkylcarbamoyl)methoxy]- and [(N-azacrown-n)carbonylmethoxy]- substituents at the lower rim. The methods of synthesis of series of the mono-, di-, tri- and tetrasubstituted at the lower rim 5,11,17,23-tetra-tert-butyl-[(benzimidazolyl-2-alkylamido)methoxy]- and [(N-azacrown-n)carbonylmethoxy]-calixarenes were developed. It was shown that the molecules of obtaining compounds posses the cone conformation. The influence of the number of substituents and the length of alkyl linkers in the 2-carbamoylalkylbenzimidazolylsubstituted calixarenes on the extraction abilities toward the nitrates of nickel, cobalt, copper, zinc, cadmium such as their complexes stabilities was established. The tetrasubstituted calixarene are selectively extracted from the mixture of cations the copper ions. Product Description popup.authors Алєксєєва О.О Басок С.С Грень А.І. Краснощекая С.П. Лукьяненко О.П Мазепа О.В. Ракипов І.М popup.nrat_date 2020-04-02 Close