Badania potencjometryczne, ESI-MS i NMR nad kompleksowaniem magnezu(II) i wapnia(II) wybranymi kwasami bisfosfonowymi w roztworze wodnym

• Autorzy: Szpak M. , Matczak-Jon E. , Kurzak B.

Warianty tytułu

EN

Potentiometric, ESI-MS and NMR combined studies on the magnesium(II) and calcium(II) complexation by selected bisphosphonic acids in aqueous solution

• Języki publikacji: PL EN

Abstrakty

PL

Przeprowadzono badania nad równowagami w roztworze układów Mg(II)/Ca(II)-L (L= kwas (cykloheksylo)aminometano-1,1-difosfonowy (1), kwas azepan-1-ylo-metano-1,1-difosfonowy (2), kwas azekan-1-ylo-metano-1,1-difosfonowy (3)) metodami pH-potencjometrii, NMR i ESI-MS. Uzyskane wyniki wskazują, że we wszystkich badanych układach preferowane jest tworzenie kompleksów jednordzeniowych o stechiometrii 1:1. Rozpatrywane związki wiążą koordynacyjnie Mg(II) i Ca(II) poprzez atomy tlenu grup fosfonianowych w szerokim zakresie wartości pH.

EN

Solution equilibrium studies on the Mg(II)/Ca(II)-L systems (L= (cyclohexyl)aminomethane-1,1-diphosphonic acid (1), azepan-1-yl-methane-1,1-diphosphonic acid (2), azecan-1-yl-methane-1,1-diphosphonic acid (3) have been performed by pH-potentiometry, NMR and ESI-MS methods. The obtained results suggest preference for the formation of mononuclear complexes of 1:1 stoichiometry in all studied systems. Compounds under consideration coordinate Mg(II) and Ca(II) through oxygen atoms of the phosphonate groups over a broad pH range.

Słowa kluczowe

PL

bisfosfoniany; kompleksy; równowagi; NMR; potencjometria; ESI-MS

EN

bisphosphonates; complexes; equilibria; NMR; potentiometr

• Wydawca: Stowarzyszenie Inżynierów i Techników Przemysłu Chemicznego, ZW CHEMPRESS-SITPChem
• Czasopismo: Chemik
• Rocznik: 2014
• Tom: Vol. 68, nr 4
• Strony: 321--328
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Szpak M.

• Wydział Chemiczny, Politechnika Wrocławska, Wrocław

autor

Matczak-Jon E.

• Wydział Chemiczny, Politechnika Wrocławska, Wrocław

autor

Kurzak B.

• Wydział Chemii, Uniwersytet Opolski, Opole

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