Complexation of vanadium(V) oxoanion with ethanolamine derivatives in solution and in a cross-linked polymer

Yoshinobu Miyazaki, Shiro Matsuoka, Yoshinori Miura, Hirofumi Sakashita, Kazuhisa Yoshimura

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6 Citations (Scopus)

Abstract

Complex formation between vanadate and various ethanolamine derivatives (ethanolamine, diethanolamine, methyldiethanolamine, triethanolamine and ECTEOLA-Cellulose) has been examined in detail by using 51V NMR spectroscopy. Vanadate binds with ethanolamine to form 1:1 (O)-monodentate and (N,O)-bidentate complexes which are protonated and deprotonated forms, respectively. Ethanolamine undergoes a comparatively weak interaction with vanadate relative to the other ligands. 51V NMR spectra clearly show that vanadate reacts with the functional group of ECTEOLA-Cellulose, as well as diethanolamine, methyldiethanolamine and triethanolamine, which are analogues of the functional groups of ECTEOLA-Cellulose, to form the -1 charged 1:1 (N,O,O)-tridentate complex. In addition to anion exchange interaction of monovanadate and isopolyvanadate anions with the protonated functional group, in the alkaline region the adsorbability of vanadium(V) onto ECTEOLA-Cellulose is a consequence of the complexation of vanadate with the functional group. The formation constant of the (N,O,O) complex with ECTEOLA-Cellulose was estimated to be logβ̄(N,O,O)=3.6, which was almost the same as those with the analogues of the functional group.

Original languageEnglish
Pages (from-to)985-994
Number of pages10
JournalPolyhedron
Volume24
Issue number9
DOIs
Publication statusPublished - Jun 28 2005

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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