The Synthesis and Characterization of Novel Compounds of Niobium with Relation to Enhancing Applications in Materials

摘要

The object of the research program was to improve the general understanding of the chemistry of niobium and tantalum. A variety of the new compounds were synthesized and characterized. One series had the stoichiometry MX2(OCH3)2L where M was Nb or Ta, X was Cl or Br, and L was a beta-diketone or a related molecule. Another series had the stoichiometry MX(OCH3)2L2 where M was Nb or Ta, X was Cl, Br, or NCS, and L was one of several dialkyldithiocarbamates. A third series had the same stoichiometry as the second but L was one of several dialkyldithiophosphates. New compounds with these stoichiometries were also made, MOL3 and ML4Cl, where M was Nb or Ta and L was the anion of tropolone, 8-quinolinol, or benzoylphenylhydroxylamine. On the basis of the synthetic work and limited kinetic studies it has been possible to develop a better understanding as to which niobium and tantalum compounds are likely to exist and plausible routes to make them. (Author)