Synthesis of Amine Derivatives of the Polyhedral Borane Anion [B<sub>20</sub>H<sub>18</sub>]<sup>4</sup><sup>-</sup>
作者:Emil M. Georgiev、Kenneth Shelly、Debra A. Feakes、Jeremy Kuniyoshi、Solomon Romano、M. Frederick Hawthorne
DOI:10.1021/ic960171y
日期:1996.1.1
the polyhedral borane anion [n-B(20)H(18)](2)(-), in the presence or absence of strong nonnucleophilic auxiliary bases, to produce the [ae-B(20)H(17)(en)](3)(-) anion. In either case, substitution is accompanied, to an approximately equal extent, by reduction of the starting material to form [a(2)()-B(20)H(18)](4)(-). As found with similar substituted systems derived from this 20-boron structure, [
乙二胺(en)在存在或不存在强非亲核辅助碱的情况下与多面硼烷阴离子[nB(20)H(18)](2)(-)反应,生成[ae-B(20)H( 17)(en)](3)(-)阴离子。在任一种情况下,取代都在大约相等的程度上伴随着原料的还原形成[a(2)()-B(20)H(18)](4)(-)。正如从该20硼结构衍生的类似取代系统中发现的那样,[ae-B(20)H(17)(en)](3)(-)可以方便地重排为[a(2)()-B (20)H(17)(en)](3)(-)阴离子。已知的[ae-B(20)H(17)NH(3)](3)(-)离子的更方便合成方法是使用乙腈代替NH(3)配体作为液氨也有描述。