Synthesis, structure, magnetic properties and aqueous optical citrate detection of chiral dinuclear CuII complexes

Snehadrinarayan Khatua; Kibong Kim; Jina Kang; Jung Oh Huh; Chang Seop Hong; David G. Churchill

doi:10.1002/ejic.200900357

Synthesis, structure, magnetic properties and aqueous optical citrate detection of chiral dinuclear Cu^II complexes

Snehadrinarayan Khatua, Kibong Kim, Jina Kang, Jung Oh Huh, Chang Seop Hong, David G. Churchill

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Two chiral dimeric Cu^II Schiff base complexes, Na ₂[Cu(S-lys)₂.(H₂O)₂].(ClO ₄)₂ (1) and [Cu(S-ornH)₂.(H₂O) ₂].(ClO₄)₂ (2) have been prepared by an easy one-pot method in which, the Llysine and L-ornithine-based Schiff base ligands are generated in situ. These complexes have been characterized by various spectroscopic techniques and single-crystal X-ray diffraction. The molecular structures show that both, complexes are indeed dimeric with Cu_II centers that are phenolate-bridged. Variable-temperature magnetic analysis revealed that a strong antiferromagnetic coupling interaction was mediated through the phenolate bridge between the two Cu^II centers. Since these compounds were highly soluble in water, we explored carboxylate sensing capability through colorlmetric indicator displacement assays (IDAs). By using pyrocatechol violet (PV) as a displaceable colorimetric indicator, citrate ion selectivity was demonstrated in 100% water solution in the physiological pH range.

Original language	English
Pages (from-to)	3266-3274
Number of pages	9
Journal	European Journal of Inorganic Chemistry
Issue number	22
DOIs	https://doi.org/10.1002/ejic.200900357
Publication status	Published - 2009 Aug

Keywords

Chiral dicopper complex
Citrate detection
Magnetic properties
Schiff bases
Structure elucidation

ASJC Scopus subject areas

Inorganic Chemistry

Access to Document

10.1002/ejic.200900357

Cite this

@article{6e5bac1ecf4f40c7a14b4fe5ca8629eb,

title = "Synthesis, structure, magnetic properties and aqueous optical citrate detection of chiral dinuclear CuII complexes",

abstract = "Two chiral dimeric CuII Schiff base complexes, Na 2[Cu(S-lys)2.(H2O)2].(ClO 4)2 (1) and [Cu(S-ornH)2.(H2O) 2].(ClO4)2 (2) have been prepared by an easy one-pot method in which, the Llysine and L-ornithine-based Schiff base ligands are generated in situ. These complexes have been characterized by various spectroscopic techniques and single-crystal X-ray diffraction. The molecular structures show that both, complexes are indeed dimeric with CuII centers that are phenolate-bridged. Variable-temperature magnetic analysis revealed that a strong antiferromagnetic coupling interaction was mediated through the phenolate bridge between the two CuII centers. Since these compounds were highly soluble in water, we explored carboxylate sensing capability through colorlmetric indicator displacement assays (IDAs). By using pyrocatechol violet (PV) as a displaceable colorimetric indicator, citrate ion selectivity was demonstrated in 100% water solution in the physiological pH range.",

keywords = "Chiral dicopper complex, Citrate detection, Magnetic properties, Schiff bases, Structure elucidation",

author = "Snehadrinarayan Khatua and Kibong Kim and Jina Kang and Huh, {Jung Oh} and Hong, {Chang Seop} and Churchill, {David G.}",

year = "2009",

month = aug,

doi = "10.1002/ejic.200900357",

language = "English",

pages = "3266--3274",

journal = "Berichte der deutschen chemischen Gesellschaft",

issn = "0365-9496",

publisher = "Wiley-VCH Verlag",

number = "22",

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T1 - Synthesis, structure, magnetic properties and aqueous optical citrate detection of chiral dinuclear CuII complexes

AU - Khatua, Snehadrinarayan

AU - Kim, Kibong

AU - Kang, Jina

AU - Huh, Jung Oh

AU - Hong, Chang Seop

AU - Churchill, David G.

PY - 2009/8

Y1 - 2009/8

N2 - Two chiral dimeric CuII Schiff base complexes, Na 2[Cu(S-lys)2.(H2O)2].(ClO 4)2 (1) and [Cu(S-ornH)2.(H2O) 2].(ClO4)2 (2) have been prepared by an easy one-pot method in which, the Llysine and L-ornithine-based Schiff base ligands are generated in situ. These complexes have been characterized by various spectroscopic techniques and single-crystal X-ray diffraction. The molecular structures show that both, complexes are indeed dimeric with CuII centers that are phenolate-bridged. Variable-temperature magnetic analysis revealed that a strong antiferromagnetic coupling interaction was mediated through the phenolate bridge between the two CuII centers. Since these compounds were highly soluble in water, we explored carboxylate sensing capability through colorlmetric indicator displacement assays (IDAs). By using pyrocatechol violet (PV) as a displaceable colorimetric indicator, citrate ion selectivity was demonstrated in 100% water solution in the physiological pH range.

AB - Two chiral dimeric CuII Schiff base complexes, Na 2[Cu(S-lys)2.(H2O)2].(ClO 4)2 (1) and [Cu(S-ornH)2.(H2O) 2].(ClO4)2 (2) have been prepared by an easy one-pot method in which, the Llysine and L-ornithine-based Schiff base ligands are generated in situ. These complexes have been characterized by various spectroscopic techniques and single-crystal X-ray diffraction. The molecular structures show that both, complexes are indeed dimeric with CuII centers that are phenolate-bridged. Variable-temperature magnetic analysis revealed that a strong antiferromagnetic coupling interaction was mediated through the phenolate bridge between the two CuII centers. Since these compounds were highly soluble in water, we explored carboxylate sensing capability through colorlmetric indicator displacement assays (IDAs). By using pyrocatechol violet (PV) as a displaceable colorimetric indicator, citrate ion selectivity was demonstrated in 100% water solution in the physiological pH range.

KW - Chiral dicopper complex

KW - Citrate detection

KW - Magnetic properties

KW - Schiff bases

KW - Structure elucidation

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