Dimeric “paddle-wheel” carboxylates of copper(II): Synthesis, crystal structure and electrochemical studies

M Iqbal; I Ahmad; Saqib Ali; N Muhammad; S Ahmed; Manzar Sohail

doi:10.1016/j.poly.2012.11.037

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Dimeric “paddle-wheel” carboxylates of copper(II): Synthesis, crystal structure and electrochemical studies

Journal article

Peer reviewed

Dimeric “paddle-wheel” carboxylates of copper(II): Synthesis, crystal structure and electrochemical studies

M Iqbal, I Ahmad, Saqib Ali, N Muhammad, S Ahmed and Manzar Sohail

Polyhedron, Vol.50(1), pp.524-531

2013

DOI: https://doi.org/10.1016/j.poly.2012.11.037

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Abstract

copper carboxylates

dimeric complexes

crystal structure

cyclic voltammetry

diffusing coefficient

heterogeneous kinetics

The reaction of the sodium salt of para substituted phenyl acetic acid with CuSO4 in water and subsequent treatment with pyridine gives binuclear centro-symmetric complexes pyCu(R–C6H4CH2COO)4Cupy, where R = 4-OMe (1) and 4-Cl− (2). The structures of both complexes were solved by X-ray single crystal analysis. The frame of the complexes is constructed as a dimeric ‘paddle-wheel’ with four carboxylate bridges. The apical position is occupied by a pyridine ligand and there is a Cu–Cu bond as well. The compounds demonstrated one-electron redox behavior and their peak currents were found to increase linearly with the square root of the sweep rate (ν1/2). The overall electrode processes were found to be activation plus diffusion controlled. The values of the formal potential (E ´), diffusion coefficient (D) and heterogeneous rate constant (k°) were evaluated for the electroreduction process for both the compounds.

Details

Title: Dimeric “paddle-wheel” carboxylates of copper(II): Synthesis, crystal structure and electrochemical studies
Authors: M Iqbal (Author) - Quaid-i-Azam University, Pakistan
I Ahmad (Author) - Quaid-i-Azam University, Pakistan
Saqib Ali (Author) - Quaid-i-Azam University, Pakistan
N Muhammad (Author) - Abdul Wali Khan University, Pakistan
S Ahmed (Author) - Quaid-i-Azam University, Pakistan
Manzar Sohail (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Publication details: Polyhedron, Vol.50(1), pp.524-531
Publisher: Pergamon
DOI: 10.1016/j.poly.2012.11.037
ISSN: 0277-5387
Organisation Unit: University of the Sunshine Coast, Queensland; School of Science and Engineering - Legacy
Language: English
Record Identifier: 99450263302621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
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