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Date of Award
Master of Science (MS)
Jerry J. Cole
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.
Copyright 1965 Frederick R. Shih
Shih, Fredrick, "An Investigation of Pyridine-2-Aldoxime, 6-Methyl-Pyridine-2-Aldoxime and Quinoline-2-Aldoxime as Complexing Reagents" (1965). Master's Theses. 940.