Complexation of leucine by dioxovanadium(V) in mixed solvent systems

Authors
Gharib, F Mollaie, M
Citation
F. Gharib et M. Mollaie, Complexation of leucine by dioxovanadium(V) in mixed solvent systems, J CHEM EN D, 44(1), 1999, pp. 77-82
Citations number
13
Categorie Soggetti
Chemistry,"Chemical Engineering
Journal title
JOURNAL OF CHEMICAL AND ENGINEERING DATA
ISSN journal
00219568 → ACNP
Volume
44
Issue
1
Year of publication
1999
Pages
77 - 82
Database
ISI
SICI code
0021-9568(199901/02)44:1<77:COLBDI>2.0.ZU;2-D
Abstract
The stability constant on complexation of VO2+ with leucine in mixed solven t systems of methanol + water and dioxane + water have been determined spec trophotometrically at (25 +/- 0.1) degrees C and I = 0.15 mol.dm(-3) of sod ium perchlorate as ionic medium in the pH range (1.20-10.20) with high liga nd-to-metal ratios. Linear relationships are observed when log K is plotted versus 1/D, where K and D represent stability and dielectric constants, re spectively. The results are discussed in terms of the effect of solvent on protonation and complexation.