Document Type

Dissertation

Date of Award

1971

Keywords

Coordination compounds, Cobalt, Chemical kinetics, Cobalt blue (pigment), Cobalt blue (color), triaminotriethylamine

Degree Name

Doctor of Philosophy (PhD)

Department

Chemistry

First Advisor

Bruce McDuffie

Second Advisor

Walter E. Kaskan

Third Advisor

Thomas R. Dehner

Series

Science and Mathematics

Abstract

A most important part of coordination chemistry has always been the preparation of new complexes, because that is an excellent way of increasing our knowledge of that area of chemistry. In the last three decades or so, a tremendous number of new coordination compounds have been prepared, and by the use of different physical methods their properties have been examined. The use of physical methods of study in coordination compounds can be divided into two general areas, one being the characterization of coordination compounds, concerned chiefly with the nature of the chemical bonds involved and stereochemistry of the arrangement of atoms; and the other being the kinetic and mechanistic study of coordination compounds. With the hope of learning something about the applications of physical methods in both of these areas, and with a desire to report some useful information in coordination chemistry, the preparation, characterization, and kinetics of some cobalt(III) complexes of ß, ß′, ß″ - triaminotriethylamine were studied in this thesis.

Although triaminotriethylamine (tren), an isomer of trien, has a more rigid structure than trien, it appeared to act as a tetradentate ligand in many cobalt(III) complexes. Furthermore, all of the complexes which had been reported were found to contain only the cis isomer.41-43 Since the bis(halogenoacetato) (triaminotriethylamine) cobalt(III) complexes have not been reported in the literature, we have now synthesized these new complexes and have investigated their spectral properties in order to see how they compare with those of the other amine analogs.

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