TY - JOUR
T1 - Molecular Size Effects in the Kinetics of the Electroreduction of Nitroalkanes on Mercury
AU - Kashti, S.
AU - Kirowa‐Eisner, E.
AU - Gileadi, E.
PY - 1974
Y1 - 1974
N2 - The reduction of nitroalkanes at the dropping mercury electrode in neutral solutions (pH 5.4–7.4) was studied. Careful measurements at the foot of the polarographic wave allow accurate determination of the Tafel slopes to within ± 1 mV, thus the effect of molecular size on the Tafel slope could be determined. The analysis of the results indicates that the adsorbed intermediate, which is a charged species, is situated about halfway between the metal surface and the outer Helmholtz plane. It is also shown that the intermediate is adsorbed with the functional nitro group lying flat on the surface. Only the carbon atoms in the position α and β to the nitrogen atom seem to occupy space on the surface. The importance of employing several members of a homologous series having a common functional group to evaluate the mechanism of electrode reactions is emphasized and the importance of employing the combined isotherm in such analysis is pointed out.
AB - The reduction of nitroalkanes at the dropping mercury electrode in neutral solutions (pH 5.4–7.4) was studied. Careful measurements at the foot of the polarographic wave allow accurate determination of the Tafel slopes to within ± 1 mV, thus the effect of molecular size on the Tafel slope could be determined. The analysis of the results indicates that the adsorbed intermediate, which is a charged species, is situated about halfway between the metal surface and the outer Helmholtz plane. It is also shown that the intermediate is adsorbed with the functional nitro group lying flat on the surface. Only the carbon atoms in the position α and β to the nitrogen atom seem to occupy space on the surface. The importance of employing several members of a homologous series having a common functional group to evaluate the mechanism of electrode reactions is emphasized and the importance of employing the combined isotherm in such analysis is pointed out.
UR - http://www.scopus.com/inward/record.url?scp=84987285043&partnerID=8YFLogxK
U2 - 10.1002/ijch.197400095
DO - 10.1002/ijch.197400095
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AN - SCOPUS:84987285043
SN - 0021-2148
VL - 12
SP - 1003
EP - 1014
JO - Israel Journal of Chemistry
JF - Israel Journal of Chemistry
IS - 6
ER -