TY - GEN
T1 - Electrochemical reaction of tris(1,10-phenanthroline)iron complexes in some amide-type ionic liquids
AU - Katayama, Y.
AU - Yoshihara, M.
AU - Miura, T.
N1 - Publisher Copyright:
Copyright © 2014 by The Electrochemical Society. All rights reserved.
PY - 2014
Y1 - 2014
N2 - Electrode reactions of tris(1,10-phenanthroline)iron complexes, [Fe(phen)3]3+/2+, were investigated in some amide-type ionic liquids. The diffusion coefficients of [Fe(phen)3]2+ and [Fe(phen)3]3+ were smaller than those of tris(2,2'-bipyridine)iron complexes, [Fe(bpy)3]2+ and [Fe(bpy)3]3+, in each ionic liquid, reflecting the phen complexes are larger than the bpy complexes. The ratio of diffusion coefficient of the trivalent species to the divalent one for [Fe(phen)3]3+/2+ was smaller than that for [Fe(bpy)3]3+/2+, indicating the coulombic interaction between the charged species and the ions composing the ionic liquid is dependent on the charge densities of complexes. The rate constants for [Fe(phen)3]3+/2+ were close to those for [Fe(bpy)3]3+/2+, suggesting the outer components of reorganization energies for both complexes are similar to each other. On the other hand, the reaction entropies for [Fe(phen)3]3+/2+ were smaller than those for [Fe(bpy)3]3+/2+, reflecting the difference in the charge densities of complexes.
AB - Electrode reactions of tris(1,10-phenanthroline)iron complexes, [Fe(phen)3]3+/2+, were investigated in some amide-type ionic liquids. The diffusion coefficients of [Fe(phen)3]2+ and [Fe(phen)3]3+ were smaller than those of tris(2,2'-bipyridine)iron complexes, [Fe(bpy)3]2+ and [Fe(bpy)3]3+, in each ionic liquid, reflecting the phen complexes are larger than the bpy complexes. The ratio of diffusion coefficient of the trivalent species to the divalent one for [Fe(phen)3]3+/2+ was smaller than that for [Fe(bpy)3]3+/2+, indicating the coulombic interaction between the charged species and the ions composing the ionic liquid is dependent on the charge densities of complexes. The rate constants for [Fe(phen)3]3+/2+ were close to those for [Fe(bpy)3]3+/2+, suggesting the outer components of reorganization energies for both complexes are similar to each other. On the other hand, the reaction entropies for [Fe(phen)3]3+/2+ were smaller than those for [Fe(bpy)3]3+/2+, reflecting the difference in the charge densities of complexes.
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U2 - 10.1149/06404.0109ecst
DO - 10.1149/06404.0109ecst
M3 - Conference contribution
AN - SCOPUS:84921386037
T3 - ECS Transactions
SP - 109
EP - 117
BT - Molten Salts and Ionic Liquids 19
A2 - De Long, Hugh C.
A2 - Reichert, W. Matthew
A2 - Trulove, Paul C.
A2 - Haverhals, Luke M.
A2 - Mizuhata, Minoru
A2 - Mantz, Robert A.
A2 - Ispas, Adriana
A2 - Bund, Andreas
PB - Electrochemical Society Inc.
T2 - 19th International Symposium on Molten Salts and Ionic Liquids, MS and IL 2014, part of the Joint Meeting of the 226th ECS Meeting and 29th SMEQ Meeting
Y2 - 5 October 2014 through 9 October 2014
ER -