Enhancing Chemical Reactivity with Perfluorinated Oxyanions

全氟氧阴离子配体氧五氟碲酸盐（VI）和全氟叔基丁醇将用于制备过渡金属和镧系离子的新型非常活泼的化合物。由于溶剂分子在金属离子的配位球中，这些化合物有望在给定溶剂中具有最高的反应活性（刘易斯酸度）。努力将集中在给体极其弱的溶剂上，如芳烃和氯碳，以便形成含有配位溶剂分子的化合物，作为极容易取代的配体。将合成具有最小配位潜力的极其庞大的阴离子，如四（氧五氟碲酸盐（VI））硼酸盐，并在上述弱配位溶剂中研究它们与溶剂化金属离子的反应。这些弱配位溶剂和配体的金属离子配合物的化学反应活性增强，将应用于有机底物的选择性氧化，产生异常高氧化态的金属离子，如Cu（III）和Fe(IV)，以及溶液中裸金属和非金属阳离子的研究。该项目的研究结果可能为控制溶液中金属离子的反应性提供一种新的方法。

The perfluorinated oxyanion ligands oxopentafluorotellurate(VI) and perfluorotertiarybutoxide will be used to prepare new classes of very reactive compounds of transition metal and lanthanide ions. These compounds are expected to have the highest reactivity (Lewis acidity) possible in a given solvent, due to solvent molecules in the coordination sphere of the metal ion. Efforts will focus on solvents which are extremely weak donors, such as arene hydrocarbons and chlorocarbons, so that compounds containing coordinated solvent molecules as extremely easily replaced ligands will be formed. Extremely bulky anions which have the potential for being the least coordinating anion, such as tetrakis(oxopentafluorotellurate(VI))borate, will be synthesized, and their reactions with solvated metal ions will be studied in the weakly coordinating solvents mentioned above. The enhanced chemical reactivity of metal ion complexes of these weakly coordinating solvents and ligands will be applied to selective oxidation of organic substrates, the generation of unusual high oxidation states of metal ions, such as Cu(III) and Fe(IV), and the study of naked metal and non-metal cations in solution. The results of this project may provide a new method of controlling the reactivity of metal ions in solutions.