Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1318074 | Journal of Inorganic Biochemistry | 2008 | 7 Pages |
Abstract
The coordination properties of mixed catechol-bisphosphonates towards Fe(III) are presented. From the potentiometric and spectroscopic results it was possible to state that iron coordination takes place only on the bisphosphonate moiety at acidic pH, and involves both catechol and bisphosphonate groups on two different iron(III) ions at higher pH values. Steric constracts keep both groups from chelating the same metal ion. Quantum mechanical calculations confirm this statement and allow to determine the minimum length of the linker for a stable conformation of complexes in which the same iron(III) ion is coordinated by both catechol and bisphosphonate.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Inorganic Chemistry
Authors
Guido Crisponi, Valeria Marina Nurchi, Tiziana Pivetta,