- Communications Faculty of Sciences University Ankara Series B Chemistry and Chemical Engineering
- Vol: 40
- AZO - HYDRAZO TAUTOMERISM: FURTHER EVIDENCE BASED ON POLAROGRAPHIC REDUCTION AND ACIDITY FUNCTION OF...
AZO - HYDRAZO TAUTOMERISM: FURTHER EVIDENCE BASED ON POLAROGRAPHIC REDUCTION AND ACIDITY FUNCTION OF SOME HETEROCYCLIC COMPOUNDS CONTAINING OXIMINO - GROUP
Authors : Ahlam M. A. Helmy
Pages : 60-72
Doi:10.1501/Commub_0000000414
View : 8 | Download : 4
Publication Date : 1994-01-01
Article Type : Research
Abstract :Potentiometric pKa and polarographic behaviour of 1, 3-indandione-monoxime and four of its substituted derivatives were investigated in buffer solution of pH ~ 2-12. The results showed that the compounds are in the azo-form, where its reduction wave precedes that of the oxime. A mechanism for the electrodic processes was proposed. Half-wave potentials showed fair cor- relation with Hammett’s er constants while pKa is practically independent.Keywords : AZO - HYDRAZO TAUTOMERISM, ACIDITY FUNCTION, HETEROCYCLIC COMPOUNDS