Complexation Study of UO2 2+ Ion with 18-Crown-6, Dicyclohexyl-18-crown-6 and Dibenzo-18-crown-6 in Binary Nitromethane-Acetonitrile Mixture by a Competitive NMR Technique Using 7 LI Nucleus as a Probe

Karkhaneei, E.; Zebarjadian, M.; Shamsipur, M.

Artykuł - szczegóły

Tytuł artykułu

Complexation Study of UO2 2+ Ion with 18-Crown-6, Dicyclohexyl-18-crown-6 and Dibenzo-18-crown-6 in Binary Nitromethane-Acetonitrile Mixture by a Competitive NMR Technique Using 7 LI Nucleus as a Probe

Autorzy

Karkhaneei E. , Zebarjadian M. , Shamsipur M.

Identyfikatory

Warianty tytułu

Języki publikacji

Abstrakty

Lithium-7NMRmeasurements were used to determine the stability of 1:1 Li+ complexes with 18-crown-6 (18C6), dicyclohexyl-18-crown-6 (DC18C6) and dibenzo-18-crown-6 (DB18C6) in various binary nitromethane-acetonitrile mixtures.Acompetitive 7LiNMR technique was also employed to probe the complexation of UO2 2+ ion with these crown ethers in the mixed solvents used. In all solvent mixtures, the stability of the resulting 1:1 complexes was found to decrease in the order DC18C6 > 18C6 > DB18C6. There is an inverse relationship between the complex stability and the amount of acetonitrile in the mixed solvents.

Słowa kluczowe

competitive 7Li NMR UO2 2+ ion crown ether complexation stability binary mixed solvents

Wydawca

Polskie Towarzystwo Chemiczne

Czasopismo

Polish Journal of Chemistry

Rocznik

2003

Tom

Vol. 77 / nr 2

Strony

227--235

Opis fizyczny

Bibliogr. 33 poz., rys.

Twórcy

autor

Karkhaneei E.

Department of Chemistry, Bu-Ali Sina University, Hamadan, Iran

autor

Zebarjadian M.

Department of Chemistry, Bu-Ali Sina University, Hamadan, Iran

autor

Shamsipur M.

Department of Chemistry, Razi University, Kermanshah, Iran

Bibliografia

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Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-article-BUJ1-0023-0083