The goal of this research is to determine the structure of products and the nature of the mechanism of the reactions of cerium (III) and cerium (IV) salts with amides (particularly formamide, acetamide, and benzamide). The cerium salts used for cerium (III) and cerium (IV) are respectively cerium (III) chloride and ceric ammonium nitrate. The following reactions have been performed with each cerium salt: 1) metal compound + sodium persulfate (oxidizer) + amide; 2) metal compound + amide; and 3) metal compound + phenylisocyanate. Additionally, hydrogen peroxide has been used as an oxidizer. The solvent in each reaction was acetonitrile. Each reaction occurred between a 24 hour to 120 hour period in order to insure precipitate formation that usually was accompanied by a color change. The reaction with phenylisocyanate was performed to give more indication as to the mechanism of the reaction since phenylisocyanate is predicted to be an intermediate. Infrared (IR) spectroscopy, GC-mass spectroscopy (GC-MS), high performance liquid chromatography, and Raman spectroscopy were all used to analyze the products. A goal of this research was to provide further understanding of the nature and behavior of lesser studied metal compounds such as cerium. Future considerations are to involve other lesser studied metals such as molybdenum, vanadium, zinc, and possibly bismuth.

Complexation reactions of cerium (III) and cerium (IV) salts with amides

249th National Meeting (2015)

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