首页> 外文期刊>RSC Advances >From inverse sandwich Ta(2)B(7)(+)and Ta(2)B(8)to spherical trihedral Ta3B12-: prediction of the smallest metallo-borospherene
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From inverse sandwich Ta(2)B(7)(+)and Ta(2)B(8)to spherical trihedral Ta3B12-: prediction of the smallest metallo-borospherene

机译:从逆夹心Ta(2)B(7)(+)和Ta(2)B(8)至球形三面向Ta3b12-:最小金属硼乙烯的预测

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摘要

Transition-metal-doped boron nanoclusters exhibit interesting structures and bonding. Inspired by the experimentally discovered inverse sandwichD(6h)Ta(2)B(6)and spherical trihedralD(3h)La(3)B(18)(-)and based on extensive first-principles theory calculations, we predict herein the structural transition from perfect di-metal-doped inverse sandwichD(7h)Ta(2)B(7)(+)(1) andD(8h)Ta(2)B(8)(2) to tri-metal-doped spherical trihedralD(3h)Ta(3)B(12)(-)(3). As the smallest metallo-borospherene reported to date, Ta3B12-(3) contains three octa-coordinate Ta atoms as integral parts of the cage surface coordinated in three equivalent eta(8)-B(8)rings which share two eclipsed equilateral B(3)triangles on the top and bottom interconnected by three B(2)units on the waist. Detailed orbital and bonding analyses indicate that both Ta2B7+(1) and Ta2B8(2) possess sigma + pi dual aromaticity, while Ta3B12-(3) is sigma + pi + delta triply aromatic in nature. The IR, Raman, and UV-vis or photoelectron spectra of the concerned species are computationally simulated to facilitate their future spectroscopic characterizations.
机译:过渡金属掺杂的硼纳米团簇表现出有趣的结构和粘合。灵感来自实验发现逆sandwichD(6H)TA(2)B(6)和球形trihedralD(3H)的La(3)B(18)( - )和基于广泛的第一原理的理论计算中,我们在本文的结构预测从完美的二金属掺杂逆夹层(7H)Ta(2)B(7)(+)(1)槽(8h)Ta(2)B(8)(2)至三金属掺杂球形Trihedrald (3H)TA(3)B(12)( - )(3)。为最小的金属 - 硼球烯迄今为止报道,Ta3B12-(3)包含三个八坐标的Ta原子作为在三个等效ETA(8)-B(8)的环,其份额2黯然失色等边乙协调笼表面的组成部分( 3)顶部和底部的三角形由腰部上的三个B(2)单位互连。详细的轨道和粘合分析表明TA2B7 +(1)和TA2B8(2)都具有Sigma + Pi双芳香性,而TA3B12-(3)是Sigma + Pi + Delta在自然界中进行三次芳香族。有关物种的IR,拉曼和UV-Vis或光电子光谱是计算模拟,以促进其未来的光谱性表征。

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  • 来源
    《RSC Advances》 |2020年第49期|共6页
  • 作者单位

    Shanxi Univ Inst Mol Sci Taiyuan 030006 Peoples R China;

    Shanxi Univ Inst Mol Sci Taiyuan 030006 Peoples R China;

    Shanxi Univ Inst Mol Sci Taiyuan 030006 Peoples R China;

    Shanxi Univ Inst Mol Sci Taiyuan 030006 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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