Equilibrium studies of 2,2'-(5-bromo-6-methylpyrimidine-2,4-diyl)bis(azanediyl)dipropanoic acid with some transition-metal ions in aqueous solution

The stability constants of the 1:1 complexes formed between M2+ (M2+: Mn2+, Ni2+, Cu2+, or Cd2+) and BMADA2- (BMADA: 2,2'-(5-bromo-6-methylpyrimidine-2,4 diyl)bis(azanediyl)dipropanoic acid) were determined by potentiometric pH titration in aqueous solution (I = 0.1 mol L-1, NaNO3, 25 °C). The stability of the binary M - BMADA complexes is determined by the basicity of the carboxyl or amino groups. All the stability constants reported in this work exhibit the usual trend, and the order obtained was Mn2+< Ni2+ < Cu2+ > Cd2+. The observed stability order for BMADA approximately follows the Irving - Williams sequence. In the M - BMADA complexes, the M ion is able to form a macrochelate via the pyrimidine group of BMADA.

Saved in:
Bibliographic Details
Main Authors: Sajadi,Seyed A. A., Bagherzadeh,Ghodsieh, Khaleghian,Marzieh, Mirbagheri,Maryam, Safaie,Hosein
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Química 2014
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422014000500020
Tags: Add Tag
No Tags, Be the first to tag this record!
id oai:scielo:S0100-40422014000500020
record_format ojs
spelling oai:scielo:S0100-404220140005000202014-07-28Equilibrium studies of 2,2'-(5-bromo-6-methylpyrimidine-2,4-diyl)bis(azanediyl)dipropanoic acid with some transition-metal ions in aqueous solutionSajadi,Seyed A. A.Bagherzadeh,GhodsiehKhaleghian,MarziehMirbagheri,MaryamSafaie,Hosein divalent metal ions potentiometric titration acidity and stability constants The stability constants of the 1:1 complexes formed between M2+ (M2+: Mn2+, Ni2+, Cu2+, or Cd2+) and BMADA2- (BMADA: 2,2'-(5-bromo-6-methylpyrimidine-2,4 diyl)bis(azanediyl)dipropanoic acid) were determined by potentiometric pH titration in aqueous solution (I = 0.1 mol L-1, NaNO3, 25 °C). The stability of the binary M - BMADA complexes is determined by the basicity of the carboxyl or amino groups. All the stability constants reported in this work exhibit the usual trend, and the order obtained was Mn2+< Ni2+ < Cu2+ > Cd2+. The observed stability order for BMADA approximately follows the Irving - Williams sequence. In the M - BMADA complexes, the M ion is able to form a macrochelate via the pyrimidine group of BMADA.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaQuímica Nova v.37 n.5 20142014-06-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422014000500020en10.5935/0100-4042.20140144
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Sajadi,Seyed A. A.
Bagherzadeh,Ghodsieh
Khaleghian,Marzieh
Mirbagheri,Maryam
Safaie,Hosein
spellingShingle Sajadi,Seyed A. A.
Bagherzadeh,Ghodsieh
Khaleghian,Marzieh
Mirbagheri,Maryam
Safaie,Hosein
Equilibrium studies of 2,2'-(5-bromo-6-methylpyrimidine-2,4-diyl)bis(azanediyl)dipropanoic acid with some transition-metal ions in aqueous solution
author_facet Sajadi,Seyed A. A.
Bagherzadeh,Ghodsieh
Khaleghian,Marzieh
Mirbagheri,Maryam
Safaie,Hosein
author_sort Sajadi,Seyed A. A.
title Equilibrium studies of 2,2'-(5-bromo-6-methylpyrimidine-2,4-diyl)bis(azanediyl)dipropanoic acid with some transition-metal ions in aqueous solution
title_short Equilibrium studies of 2,2'-(5-bromo-6-methylpyrimidine-2,4-diyl)bis(azanediyl)dipropanoic acid with some transition-metal ions in aqueous solution
title_full Equilibrium studies of 2,2'-(5-bromo-6-methylpyrimidine-2,4-diyl)bis(azanediyl)dipropanoic acid with some transition-metal ions in aqueous solution
title_fullStr Equilibrium studies of 2,2'-(5-bromo-6-methylpyrimidine-2,4-diyl)bis(azanediyl)dipropanoic acid with some transition-metal ions in aqueous solution
title_full_unstemmed Equilibrium studies of 2,2'-(5-bromo-6-methylpyrimidine-2,4-diyl)bis(azanediyl)dipropanoic acid with some transition-metal ions in aqueous solution
title_sort equilibrium studies of 2,2'-(5-bromo-6-methylpyrimidine-2,4-diyl)bis(azanediyl)dipropanoic acid with some transition-metal ions in aqueous solution
description The stability constants of the 1:1 complexes formed between M2+ (M2+: Mn2+, Ni2+, Cu2+, or Cd2+) and BMADA2- (BMADA: 2,2'-(5-bromo-6-methylpyrimidine-2,4 diyl)bis(azanediyl)dipropanoic acid) were determined by potentiometric pH titration in aqueous solution (I = 0.1 mol L-1, NaNO3, 25 °C). The stability of the binary M - BMADA complexes is determined by the basicity of the carboxyl or amino groups. All the stability constants reported in this work exhibit the usual trend, and the order obtained was Mn2+< Ni2+ < Cu2+ > Cd2+. The observed stability order for BMADA approximately follows the Irving - Williams sequence. In the M - BMADA complexes, the M ion is able to form a macrochelate via the pyrimidine group of BMADA.
publisher Sociedade Brasileira de Química
publishDate 2014
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422014000500020
work_keys_str_mv AT sajadiseyedaa equilibriumstudiesof225bromo6methylpyrimidine24diylbisazanediyldipropanoicacidwithsometransitionmetalionsinaqueoussolution
AT bagherzadehghodsieh equilibriumstudiesof225bromo6methylpyrimidine24diylbisazanediyldipropanoicacidwithsometransitionmetalionsinaqueoussolution
AT khaleghianmarzieh equilibriumstudiesof225bromo6methylpyrimidine24diylbisazanediyldipropanoicacidwithsometransitionmetalionsinaqueoussolution
AT mirbagherimaryam equilibriumstudiesof225bromo6methylpyrimidine24diylbisazanediyldipropanoicacidwithsometransitionmetalionsinaqueoussolution
AT safaiehosein equilibriumstudiesof225bromo6methylpyrimidine24diylbisazanediyldipropanoicacidwithsometransitionmetalionsinaqueoussolution
_version_ 1756387565637730304