The Influence of 2,2'-Bipyridine and 1-Amino-9,10-anthraquinone Side-Arm on Complexation Equilibria of Diaza-15-crown Ether in Various Solvents

• Autorzy: Kira J. , Ossowski T.
• Języki publikacji: EN

Abstrakty

EN

The influence of 2,2'-bipyridine and 1-amino-9,10-anthraquinone side-arm of diaza-15-crown ether on sil ver(I) complexation equilibria has been investigated in various non-aqueous solvents. The 2,2'-bipyridyl residue attached to the nitrogen atom of the macrocycle significantly controls the formation of 1:1 inclusion-type complexes by stabilizing silver ions in side the cavity. The addi tion of a sec ond 2,2'-bipyridine or 1-amino-9,10-anthraquinone slightly changes the stability constants of diaza-15-crown ether complexes and as well 1:2 metal-to-ligand complexes. Ag2L2+, Ag2L3 2+ and Ag2L3 2+ have been found, depending on the type of ligand and solvent species of higher complexity. This has been proved by both spectro photometric and potentiometric methods. Studies of substituted diaza-15-crown ethers were performed for comparison with an unsubstituted ligand.

Słowa kluczowe

EN

azacrown ethers; bipyridine; equilibrium; silver(I)

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2009
• Tom: Vol. 83, nr 12
• Strony: 2067--2078
• Opis fizyczny: Bibliogr. 30 poz., rys.

Twórcy

autor

Kira J.

autor

Ossowski T.

• Depart ment of Chemistry, University of Gdańsk, Sobieskiego 18, 80–952 Gdańsk, Poland,

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