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Complexation Properties of Ethylenediaminetetramethylenephosphonic Acid (EDTMP) with Al III and V IV O
Author(s) -
Di Marco Valerio,
Kilyen Melinda,
Jakusch Tamás,
Forgó Péter,
Dombi György,
Kiss Tamás
Publication year - 2004
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200300693
Subject(s) - chemistry , potentiometric titration , stoichiometry , ionic strength , aqueous solution , stability constants of complexes , electron paramagnetic resonance , inorganic chemistry , ionic bonding , metal , nuclear chemistry , ion , organic chemistry , nuclear magnetic resonance , physics
The complexation properties (including stoichiometries and stability constants of the complexes formed) of ethylenediaminetetramethylenephosphonic acid with Al III and V IV O were studied in aqueous solution at an ionic strength of 0.2 M KCl, at 25 °C by means of pH potentiometry. For Al III both mononuclear (AlLH n ) and dinuclear (Al 2 LH n ) species were found in solution, whereas for V IV O only mononuclear complexes were detected. For each metal ion, a solid complex was isolated at acidic pH and was characterized stoichiometrically. 1 H and 31 P NMR (for Al III ), UV/Vis and EPR (for V IV O) spectra were used to confirm the potentiometric results and to suggest the most probable binding mode of the complexes formed in solution. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)
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