Metal Atom Synthesis of Metallaboron Clusters. 8. Synthesis of New Cobalt, Iron, and Nickel Clusters Derived from 2,6-C2B7H11. Structural Characterization of 2-ETA 6-C6(CH3)3H3 Fe-1,6-C2B7H9, 6-ETA 6-C6(CH3)3H3 Fe-9,10-C2B7H11, and 5,7,8-(CH3)-11,7,8,10- ETA 3-C4(CH3)4H niC3B7H7.

摘要

Work in our laboratory has shown that metal atom reaction techniques can be successfully applied to the synthesis of new types of polyhedral metallaboron compounds not attainable by using more conventional synthetic procedures. Much of our previous work has employed reactive small cage systems such as B5H9, B6H10, or nido-2,3-(C2H5)2C2B4H6 as reactants and has resulted in the production of a variety of new metallaborane, -carborane, and -thiaborane clusters. Our recent work reporting the synthesis of new types of (n6-arene)ferraborane compounds, as well as the first example of a ferraoxaborane cluster cluster, derived from decaborane(14) demonstrated that these techniques can also be used to generate new types of metallaboron clusters from higher boron cage systems. We are now further investigating such possiblities and report here the synthesis and structural characterization of a number of unique metal-boron clusters derived from the nido-carborane 2,6-C2B7H11.