Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/12787
Title: Copper(II) complexes of 13-membered amide-based macrocyclic ligands: Effect of electronic substituents on redox properties
Authors: Kumar, Sushil
Gupta, Rajeev
Keywords: Coordination chemistry
Copper
Macrocyclic ligands
Crystal structures
Electrochemistry
Electronic effects
Issue Date: Sep-2011
Publisher: NISCAIR-CSIR, India
Abstract: The present work discusses copper(II) complexes of 13–membered macrocyclic ligands carrying electronic substituents on the ligand periphery. The complexes have been thoroughly characterized including crystallographic investigations of two representative compounds. The crystal structures confirm that the metal center is coordinated by two deprotonated N<sub>amide</sub> and two neutral N<sub>amine</sub> atoms in an N<sub>4</sub> basal plane within the macrocyclic cavity. The electrochemical studies suggest that the different electronic substituents present on the ligand periphery (–H, –Cl, –CH<sub>3</sub>, and –OCH<sub>3</sub>) significantly alter the Cu<sup>III</sup>–Cu<sup>II</sup> potential values. Based on the electrochemical findings, the transient Cu(III) species generated coulometrically are characterized by their absorption spectra.
Description: 1369-1379
URI: http://hdl.handle.net/123456789/12787
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.50A(09-10) [September-October 2011]

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