caa a22 4500 465775977 CHVBK 20180323111942.0 cr unu---uuuuu 170327e19901001xx s 000 0 eng 10.1007/BF01177459 doi (NATIONALLICENCE)springer-10.1007/BF01177459 Djurdjevic Preorag Faculty of Science, R. Domanovica 12, P.O. Box 60, 3400, Kragujevac, Yugoslavia aut The complexation between iron(III) ion and glycine in nitrate medium [Elektronische Daten] [Preorag Djurdjevic] Summary: In the present work, complex formation between iron(III) ion and glycine was studied by spectrophotometric and enf glass-electrode measurements in a 0.5M NaNO3 medium, at 25°C. The stability constants of iron(III) hydrolytic species were determined in separate experiments and used in the analysis of the iron(III)-glycine system. The experimental data were explained by the following complexes and formation constants: $$\begin{gathered} \left[ {FeGly} \right]^{2 + } \log \beta _{1,0,1} = 8.57 \pm 0.01 \hfill \\ \left[ {FeHGly} \right]^{3 + } \log \beta _{1,1,1} = 11.33 \pm 0.02 \hfill \\ \left[ {Fe_2 \left( {OH} \right)_2 Gly} \right]^{2 + } \log \beta _{2, - 2,2} = 12.32 \pm 0.08 \hfill \\ \end{gathered} $$ Stability constants of pure hydrolytic complexes of iron were found to be: $$\begin{gathered} \left[ {FeOH} \right]^{2 + } \log \beta _{1, - 1,0} = - 2.58 \pm 0.03 \hfill \\ \left[ {Fe\left( {OH} \right)_2 } \right]^ + \log \beta _{1, - 2.0} = - 6.36 \pm 0.05 \hfill \\ \left[ {Fe_2 \left( {OH} \right)_2 } \right]^{4 + } \log \beta _{2, - 2.0} = - 3.15 \pm 0.02 \hfill \\ \end{gathered} $$ Possible structures for the complexes in solution are suggested. Chapman and Hall Ltd., 1990 Transition Metal Chemistry Kluwer Academic Publishers 15/5(1990-10-01), 345-350 0340-4285 15:5<345 1990 15 11243 https://doi.org/10.1007/BF01177459 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01177459 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Djurdjevic Preorag Faculty of Science, R. Domanovica 12, P.O. Box 60, 3400, Kragujevac, Yugoslavia aut NATIONALLICENCE 773 0- Transition Metal Chemistry Kluwer Academic Publishers 15/5(1990-10-01), 345-350 0340-4285 15:5<345 1990 15 11243 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer