Durmaz, MustafaBozkurt, SelahattinSirit, AbdulkadirYilmaz, Mustafa2020-03-262020-03-2620071061-0278https://dx.doi.org/10.1080/10610270600915979https://hdl.handle.net/20.500.12395/21636The synthesis of novel diamide derivatives of calix[4]arene by aminolysis of calix[4]arene diesters was reported. The H-1 and C-13 NMR, data showed that the synthesized compounds exist in the cone conformation. The complexation properties of these calix[4]arenes have been studied towards Cr2O7=/HCr2O7- anions and it has been found that the protonated alkyl ammonium forms of calix[4]arene diamide derivatives (5,11,17,23-tetra-tert-butyl-25,27-(diethylpiperidineacetamido)26,28- dihydroxy-calix[4]arene 3 and 25,27-(diethyl-piperidineacetamido)26,28-dihydroxycalix[4]arene 4) are effective extractants for transferring HCr2O7-/Cr2O7= anions.en10.1080/10610270600915979info:eu-repo/semantics/closedAccesscalix[4]arenediamidedichromate anionssolventextractionArticle193159165Q3WOS:000248333600003Q2