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KMID : 1059519950390110842
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Journal of the Korean Chemical Society
1995 Volume.39 No. 11 p.842 ~ p.847
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Electrochemical Behaviors for Cathodic Reaction of N'-aryl-N-alkyl-N-nitrosourea Drivatives
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Won Mi-Sook
Kim Jack C.
Jeong Euh-Duck
Shim Yon-Bo
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Abstract
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The electrochemical reduction reactions of N '-aryl-N-alkyl-N-nitrosourea derivatives with a glassy carbon electrode were diffusion controlled and irreversible. The exchange kinetic constant ko values for reduction reaction of the N '-aryl-N-alkyl-N-nitrosoureas were at the range of 1.48×10-6∼5.32×10-7 cm/sec. The k0 values for phenyl substituted on the aryl position were about 1.3∼2.8 times higher than that of other substituents. The same substituent for aryl groups on the both of N '-aryl-N-alkyl-N-nitrosourea and N '-aryl-N-(2-chloroethyl)-N-nitrosourea exhibited same value. The Ep value was shifted to the negative direction as pH increased. The number of protons participated to the reduction was 4∼5, respectively. The substituent effect of aryl group on the reduction potential was not observed in this case.
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KEYWORD
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