Master's Theses

Department

Chemistry

Degree Name

Master of Science (MS)

Abstract

Pyridine-2-aldoxime, 6-methyl -pyridine-2-aldoxime and quinoline-2-aldoxime were investigated as complexing reagents. It was found that they complex with metals in approximately the same manner. Acid dissociation constants of the compounds were determined by potentiometric titrations. The calculated values are as follows: pK1 = 3.67, 3.83, 2.44 and pK2 = 10.17, 10.73, 10.38 for pyridine-2-aldoxime, 6-methyl-pyridine-2-aldoxime and quinoline-2-aldoxime respectively. Preliminary tests were made to study the interaction of a series of metals and the reagents. Only a few transition metals, such as manganese, iron, cobalt, nickel and palladium, were found to react with the reagents to give colored complexes which were usually yellow to red. Two systems, cobalt 6-methyl-pyridine-2-aldoxime and quinoline-2-aldoxime, were more fully studied. The former was found to have 2:1 reagent to metal ion stoichiometry; the latter to be a 3:1 reagent to metal ion complex. Both systems obey Beer's law over a concentration range from 1 x 10-5 to 5 x 10-5 M in cobalt, at the wavelengths of 344 mu and 368 mu respectively.

Keywords

Concentrations, Stoichiometry, Chemistry, Chemical tests and reagents, Metals, Experiments, Substitution reactions

Advisor

Jerry J. Cole

Date of Award

Fall 1965

Document Type

Thesis - campus only access

Rights

© The Author(s)

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