Synthesis, Structure, Magnetic Properties and Aqueous Optical Citrate Detection of Chiral Dinuclear Cu II Complexes

Autor:	Jung Oh Huh, Kibong Kim, Snehadrinarayan Khatua, David G. Churchill, Jina Kang, Chang Seop Hong
Rok vydání:	2009
Předmět:	chemistry.chemical_classification Schiff base Aqueous solution Chemistry Inorganic chemistry Crystal structure Citrate ion Coordination complex Inorganic Chemistry chemistry.chemical_compound Crystallography Carboxylate Selectivity Magnetic analysis
Zdroj:	European Journal of Inorganic Chemistry. 2009:3266-3274
ISSN:	1099-0682 1434-1948
Popis:	Two chiral dimeric CuII Schiff base complexes, Na2[Cu(S-lys)2·(H2O)2]·(ClO4)2 (1) and [Cu(S-ornH)2·(H2O)2]·(ClO4)2 (2) have been prepared by an easy one-pot method in which the L-lysine 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 colorimetric 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.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
Databáze:	OpenAIRE
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