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1995 (1)
1Author    B. Gyurcsik3, N. Buzásb, T. Gajdab, L. Nagyb, E. Kuzmannc, A. Vértesc, K. BurgerbRequires cookie*
 Title    The Stability and Structure of Complex Species Formed in Equilibrium Reactions of Diethyltin(IV) with N-D-Gluconylamino Acids in Aqueous Solution  
 Abstract    Complex formation equilibria of diethyltin(IV) with five TV-D-gluconylamino acids in aque­ ous solution (I = 0.1 M, NaC104) were studied and the stabilities of the species were deter­ mined by potentiometric titrations. Diethyltin(IV) complexes of a-amino acid derivatives are water-soluble in the physiological pH range, while in the presence of 7V-D-gluconyl-/?-alanine a precipitate is formed, which dissolves with increasing pH. 13C NM R measurements showed that in the /V-D-gluconyl-a-amino acid complexes the ligand is coordinated through its depro-tonated carboxylate oxygen, amide nitrogen and C(2)-hydroxy group, while for the soluble /V-D-gluconyl-/?-alanine complex the ligand is coordinated via the deprotonated carboxylate and C(3)-, C(4)-, C(5)-hydroxy groups. Mössbauer measurements reflected the geometry of the complexes formed. 
  Reference    Z. Naturforsch. 50b, 515—523 (1995); received September 28 1994 
  Published    1995 
  Keywords    Diethyltin(IV), /V-D-Gluconylamino Acid Complexes, Potentiometry, Mössbauer Spectra, NM R Spectra 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-0515.pdf 
 Identifier    ZNB-1995-50b-0515 
 Volume    50