1,3,2‐Diselenaborolanes with an Annelated Dicarba‐
<i>closo</i>
‐dodecaborane(12) Unit: Synthesis, Molecular Structure and Reactivity
作者:Bernd Wrackmeyer、Elena V. Klimkina、Wolfgang Milius
DOI:10.1002/ejic.201100563
日期:2011.10
obtained in a mixture with a decomposition product. The gas-phase structures of all relevant products were optimized by DFT hybrid methods [RB3LYP/6-311+G(d.p) level of theory], and NMR parameters (shielding constants and spin–spin coupling constants) were calculated. The calculated data compare well with experimental data, both for the structures and the NMR spectroscopic parameters.
2,2-二甲基-1,3-二硒-2-硅杂环戊烷和2,2,3,3-四甲基-1,4-二硒-2,3-二硅杂环己烷的交换反应,作为4,5-和5, 6-[1,2-dicarba-closo-dodecaborano(12)] 衍生物,分别与三卤化硼 (BCl3, BBr3, BI3) 和二氯化物 (PhBCl2, iPr2NBCl2) 提供相应的 1,3,2-diselenaborolanes屈服。通过多核磁共振波谱(1H、11B、13C、29Si、77Se)对溶液中的产物进行表征,对于两种产物,通过 X 射线结构分析表征为固态。合成氟化硼的尝试失败了,在与分解产物的混合物中获得了甲氧基衍生物。所有相关产物的气相结构均通过 DFT 混合方法进行优化 [RB3LYP/6-311+G(dp) 理论水平],和核磁共振参数(屏蔽常数和自旋-自旋耦合常数)被计算出来。计算数据与实验数据相比,无论是结构还是核磁共振光谱参数。