Please use this identifier to cite or link to this item:
Title: Electrochemistry of oxo-bridged ruthenium dimers with 4,4′-dichloro- and 5,5′-dichloro-2,2′-bipyridine and their catalytic properties towards water oxidation
Authors: Lai, YK
Wong, KY 
Keywords: Bipyridines
Ruthenium oxo-bridged dimers
Water oxidation
Issue Date: 1995
Publisher: Elsevier
Source: Journal of electroanalytical chemistry, 1995, v. 380, no. 1-2, p. 193-200 How to cite?
Journal: Journal of electroanalytical chemistry 
Abstract: Ruthenium μ-oxo dimers with chloro-substituted 2,2′-bipyridines [L2(H2O)RuIIIORuIII(OH2)L2]4+ (L= 4,4′-dichloro- or 5,5′-dichloro-2,2′-bipyridine) were synthesized. Electrochemical studies on the complexes showed that the RuIII|O|RuIII dimer undergoes a reversible one-electron oxidation to RuIII|O|RuIV followed by a reversible multi-electron oxidation assignable as the oxidation of RuIII|O|RuIV to RuIV|O|RuV. The RuIII|O|RuIV and RuIV|O|RV species were characterized by thin-layer spectroelectrochemistry. The RuIV|O|RuV dimer is an active catalyst for the chemical or electrochemical oxidation of water to dioxygen. Upon reduction, the RuIII|O|RuIII dimer undergoes reductive cleavage to give [RuIIL2(H2O)2]2+. The chloro-substituted ruthenium dimers are more stable towards reductive cleavage in mildly acidic media than the unsubstituted [(bpy)2(H2O)RuIIIORuIII(OH2)(bpy)2]4+ (bpy= 2,2′-bipyridine).
ISSN: 0022-0728
Appears in Collections:Journal/Magazine Article

View full-text via PolyU eLinks SFX Query
Show full item record


Citations as of Feb 25, 2017

Page view(s)

Last Week
Last month
Checked on Aug 21, 2017

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.