Complex formation between transition metals and DL-aspartic acid-β-hydroxamic acid (N-hydroxyasparagine)

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Formation constants and assumptions concerning the bonding mode are reported for the complexes present in aqueous solution in the cobalt(II)-, nickel(II)-, copper(II)-, zinc(II)-, and iron(III)-DL-aspartic acid-β-hydroxamic acid (N-hydroxyasparagine, hasn) systems. The amino nitrogen, the hydroxamate nitrogen, and the carboxylate oxygen are the main co-ordinating donor atoms in the cobalt(II)- and nickel(II)-hasn complexes. The hydroxamate oxygens may also take part in co-ordination in the zinc(II)-hasn system. Very stable 1:1 and 1:2 binary complexes are formed in the iron(III)-hasn system, with tridentate co-ordination (hydroxamate and carboxylate oxygens) of the ligand. Mixed hydroxo complexes are proposed at pH >5. A polymeric species, with composition [Cu4A4H-2]2-, is the most stable complex in the copper(II)-hasn system.

Original languageEnglish
Pages (from-to)1549-1551
Number of pages3
JournalJournal of the Chemical Society, Dalton Transactions
Issue number5
DOIs
Publication statusPublished - 1990

Fingerprint

Hydroxamic Acids
Aspartic Acid
Transition metals
Iron
Oxygen
Cobalt
Nickel
Zinc
Copper
Nitrogen
Ligands
Atoms
Chemical analysis

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

@article{4482e13705d24e3889f4c4b665497996,
title = "Complex formation between transition metals and DL-aspartic acid-β-hydroxamic acid (N-hydroxyasparagine)",
abstract = "Formation constants and assumptions concerning the bonding mode are reported for the complexes present in aqueous solution in the cobalt(II)-, nickel(II)-, copper(II)-, zinc(II)-, and iron(III)-DL-aspartic acid-β-hydroxamic acid (N-hydroxyasparagine, hasn) systems. The amino nitrogen, the hydroxamate nitrogen, and the carboxylate oxygen are the main co-ordinating donor atoms in the cobalt(II)- and nickel(II)-hasn complexes. The hydroxamate oxygens may also take part in co-ordination in the zinc(II)-hasn system. Very stable 1:1 and 1:2 binary complexes are formed in the iron(III)-hasn system, with tridentate co-ordination (hydroxamate and carboxylate oxygens) of the ligand. Mixed hydroxo complexes are proposed at pH >5. A polymeric species, with composition [Cu4A4H-2]2-, is the most stable complex in the copper(II)-hasn system.",
author = "E. Farkas and P. Bugly{\'o}",
year = "1990",
doi = "10.1039/DT9900001549",
language = "English",
pages = "1549--1551",
journal = "Dalton Transactions",
issn = "1472-7773",
publisher = "Royal Society of Chemistry",
number = "5",

}

TY - JOUR

T1 - Complex formation between transition metals and DL-aspartic acid-β-hydroxamic acid (N-hydroxyasparagine)

AU - Farkas, E.

AU - Buglyó, P.

PY - 1990

Y1 - 1990

N2 - Formation constants and assumptions concerning the bonding mode are reported for the complexes present in aqueous solution in the cobalt(II)-, nickel(II)-, copper(II)-, zinc(II)-, and iron(III)-DL-aspartic acid-β-hydroxamic acid (N-hydroxyasparagine, hasn) systems. The amino nitrogen, the hydroxamate nitrogen, and the carboxylate oxygen are the main co-ordinating donor atoms in the cobalt(II)- and nickel(II)-hasn complexes. The hydroxamate oxygens may also take part in co-ordination in the zinc(II)-hasn system. Very stable 1:1 and 1:2 binary complexes are formed in the iron(III)-hasn system, with tridentate co-ordination (hydroxamate and carboxylate oxygens) of the ligand. Mixed hydroxo complexes are proposed at pH >5. A polymeric species, with composition [Cu4A4H-2]2-, is the most stable complex in the copper(II)-hasn system.

AB - Formation constants and assumptions concerning the bonding mode are reported for the complexes present in aqueous solution in the cobalt(II)-, nickel(II)-, copper(II)-, zinc(II)-, and iron(III)-DL-aspartic acid-β-hydroxamic acid (N-hydroxyasparagine, hasn) systems. The amino nitrogen, the hydroxamate nitrogen, and the carboxylate oxygen are the main co-ordinating donor atoms in the cobalt(II)- and nickel(II)-hasn complexes. The hydroxamate oxygens may also take part in co-ordination in the zinc(II)-hasn system. Very stable 1:1 and 1:2 binary complexes are formed in the iron(III)-hasn system, with tridentate co-ordination (hydroxamate and carboxylate oxygens) of the ligand. Mixed hydroxo complexes are proposed at pH >5. A polymeric species, with composition [Cu4A4H-2]2-, is the most stable complex in the copper(II)-hasn system.

UR - http://www.scopus.com/inward/record.url?scp=37049075781&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=37049075781&partnerID=8YFLogxK

U2 - 10.1039/DT9900001549

DO - 10.1039/DT9900001549

M3 - Article

AN - SCOPUS:37049075781

SP - 1549

EP - 1551

JO - Dalton Transactions

JF - Dalton Transactions

SN - 1472-7773

IS - 5

ER -