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  • Structural, electrochemical characterization and SOD mimic activities of 1D chain or 3D network encouraged by unique μ₂-bridging by adipate ion in mixed ligand complexes containing α-diimine as auxiliary ligand.

Structural, electrochemical characterization and SOD mimic activities of 1D chain or 3D network encouraged by unique μ₂-bridging by adipate ion in mixed ligand complexes containing α-diimine as auxiliary ligand.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy (2012-04-10)
Zafar A Siddiqi, Prashant K Sharma, M Shahid, Sarvendra Kumar, Anjuli, Armeen Siddique
ABSTRACT

The present ternary complexes [Cu(ada)(phen)(H(2)O)]·2H(2)O (1), [Co(2)(ada)(2)(phen)(2)(H(2)O)(2)] (2) and [{Cu(ada)(3)(bipy)}(n)·3nH(2)O] (3) (H(2)ada=adipic acid, phen=1,10-phenanthroline and bipy=2,2'-bipyridine) obtained under varying experimental conditions were characterized by spectral, electrochemical and thermal studies. The bonding modes and the spatial arrangements of the carboxylate dianion around the metal ions have been investigated employing FTIR, EPR and X-ray crystallographic studies. Present data revealed a six coordinate distorted octahedral geometry for 2 with a=8.068, b=9.788, c=11.788Å, α=70.464, β=75.109, γ=72.063° and a five coordinate square pyramidal geometry for 3 with a=9.509, b=9.912, c=12.656Å, α=70.486, β=73.604, γ=75.162°. The superoxide dismutase (SOD) mimic activities of the complexes are in the order 1>3>2.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Adipic acid, 99%
Sigma-Aldrich
Adipic acid, BioXtra, ≥99.5% (HPLC)
Supelco
Adipic acid, certified reference material, TraceCERT®
Sigma-Aldrich
Adipic acid, ≥99.5%