Journals / Communications Faculty of Sciences University of Ankara Series B Chemistry and Chemical Engineering / 1994 / Cilt: 40
AZO - HYDRAZO TAUTOMERISM: FURTHER EVIDENCE BASED ON POLAROGRAPHIC REDUCTION AND ACIDITY FUNCTION OF SOME HETEROCYCLIC COMPOUNDS CONTAINING OXIMINO - GROUP
- Journal
- Communications Faculty of Sciences University of Ankara Series B Chemistry and Chemical Engineering
- Issue
- 1994 · Cilt: 40
- Pages
- 60–72
- DOI
- —
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.