Density functional complexation study of metal ions with poly(carboxylic acid) ligands. Part 2. Poly(acrylic acid-co-maleic acid), poly(methyl vinyl ether-co-maleic acid), and poly(epoxy succinic acid)

Research output: Contribution to journalArticleScientificpeer-review

Researchers

Research units

  • University of Oulu
  • University of Naples Federico II
  • Kemira Oyj

Abstract

We have studied metal ion complexation with poly(carboxylic acid) ligands using density functional methods and a continuum-solvation model (COSMO). Geometry optimisations have been carried out for metal complexes of poly(acrylic acid-co-maleic acid), poly(methyl vinyl ether-co-maleic acid), and poly(epoxy succinic acid) oligomers. The complexation energies for Mg 2+, Ca2+, Mn2+, and Fe3+ have been calculated and they have been corrected with previously determined metal specific correction parameters. The most effective ligand for all the metal ions was found to be poly(epoxy succinic acid). With Ca2+, poly(epoxy succinic acid) was found to form 6-coordinated complex with three metal-coordinating carboxylate oxygen, two ether oxygens, and one hydroxyl oxygen atom. All the other metals favoured 5-coordinated complexation geometry with four metal-coordinating carboxyl oxygens and one ether oxygen atom.

Details

Original languageEnglish
Pages (from-to)12653-12661
Number of pages9
JournalPolymer
Volume46
Issue number26
Publication statusPublished - 12 Dec 2005
MoE publication typeA1 Journal article-refereed

    Research areas

  • Ab initio, Complexation, Metal ions

ID: 5461125