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首页> 外文期刊>Physical chemistry chemical physics: PCCP >Computational investigation of the Bi lone-pairs in monoclinic bismuth triborate BiB3O6
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Computational investigation of the Bi lone-pairs in monoclinic bismuth triborate BiB3O6

机译:三斜硼酸铋BiB3O6中Bi孤对的计算研究

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摘要

The Bi-O interactions and the Bi lone-pairs in monoclinic BiB3O6 are investigated with gradient-corrected hybrid B3PW density functional theory within the Gaussian-orbital-based CO-LCAO scheme. The Bi 6s and O 2p orbitals contribute to both bonding and antibonding interactions below the Fermi level. The stereochemical activity of the Bi lone-pairs was found to have a major origination from the primary interaction for the Bi 6s - O 2p antibonding orbital. The Bi 6p orbitals are not critically responsible for the non-spherical shape of the Bi lone-pairs, although they indeed participate into the secondary interaction with the Bi 6s - O 2p antibonding states. It is also suggested that O 2p components within the Bi lone-pairs are dominantly significant for the optical responses of BiB3O6 over the Bi 6s components.
机译:在基于高斯轨道的CO-LCAO方案中,使用梯度校正混合B3PW密度泛函理论研究了单斜BiB3O6中的Bi-O相互作用和Bi孤对。 Bi 6s和O 2p轨道有助于费米能级以下的键合和反键相互作用。发现Bi孤对的立体化学活性主要来自Bi 6s-O 2p反键轨道的主要相互作用。 Bi 6p轨道对Bi孤对的非球形形状并不是至关重要的,尽管它们确实参与了与Bi 6s-O 2p反键态的二次相互作用。还表明,Bi孤对中的O 2p组分对于BiB3O6对Bi 6s组分的光学响应具有显着意义。

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