Skip to main content
padlock icon - secure page this page is secure

Spectrophotometric, potentiometric, and conductometric studies of binary complex formation between copper(II) and three forms of vitamin B6 in aqueous solutions

Buy Article:

$61.00 + tax (Refund Policy)

This article reports the detailed study concerning the mode of binding of three forms of vitamin B6, pyridoxamine (pm), pyridoxine (pn), and pyridoxal (pl), with Cu(II) in aqueous solutions using three independent methods: potentiometry, conductometry, and UV–vis spectroscopy. The stability constants of complexes formed between copper(II) and vitamin B6 were investigated by potentiometric titration in 0.1 M KNO3 ionic medium at 25 °C. While drawing the relations between molar conductance and the ratio of metal to ligand concentrations, different types of lines were obtained indicating the formation of 1 : 1 and 1 : 2 stoichiometric compounds. The stability constants have been determined using EQUID and CVEQUID computer programs and the obtained results were in agreement. The relatively high values of stability constants of Cu(II)-vitamin B6 complexes obtained from three independent methods in comparison to those with other competing cations suggest that the complexes studied are relatively stable in aqueous solutions.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: Conductometry; Cu(II) complexes; Potentiometry; Spectrophotometry; Vitamin B6

Document Type: Research Article

Affiliations: Faculty of Chemistry, University of Gdansk, Gdansk, Poland

Publication date: November 2, 2015

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more