Yilmaz, AydanTabakci, BegumTabakci, Mustafa2020-03-262020-03-2620091061-0278https://dx.doi.org/10.1080/10610270802165969https://hdl.handle.net/20.500.12395/23696We have prepared new diamino derivatives of p-tert-butylcalix[4]arene from the reduction of corresponding amide derivatives. The examination of their recognition abilities towards some selected oxyanions shows that the new calix[4]arene amines are mostly more effective receptors than their amide derivatives for dichromate anions and nitrite, and capable of extracting these anions in yields as high as 95%. However, neither the calix[4]arene amines nor their corresponding amides were capable of extracting phosphate or nitrate at pH 1.5.en10.1080/10610270802165969info:eu-repo/semantics/closedAccesscalix[4]arenediaminesoxyanionscomplexationextractionArticle216435441Q3WOS:000274588500001Q2