首页> 外文期刊>The Journal of Chemical Physics >First principle structural determination of (B_2O _3)_n (n = 1-6) clusters: From planar to cage
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First principle structural determination of (B_2O _3)_n (n = 1-6) clusters: From planar to cage

机译:(B_2O _3)_n(n = 1-6)团簇的第一原理结构确定:从平面到笼

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摘要

The structure of (B_2O_3)_n clusters (n = 1-6) are investigated using the method combining the genetic algorithm with density functional theory. Benchmark calculations indicate that TPSSh functional is reliable in predicting the energetic sequences of different isomers of (B_2O_3)_n cluster compared to the high-level coupled cluster method. The global minimum (GM) structures of (B _2O_3)_n clusters are planar up to n = 3, and cages at n = 4-6. A T_d fullerene is found in the GM structure at n = 6. The stability of three-dimensional structures increases with the size of the cluster according to the analysis of the calculated atomization energy. Natural bonding analysis given by adaptive natural density partitioning reveals delocalized π-bonding in the 4-membered and 6-membered rings, and it is aromatic at the centers of cages and rings.
机译:利用遗传算法与密度泛函理论相结合的方法研究了(B_2O_3)_n(n = 1-6)团簇的结构。基准计算表明,与高级耦合聚类方法相比,TPSSh功能在预测(B_2O_3)_n聚类的不同异构体的能量序列方面是可靠的。 (B _2O_3)_n个簇的全局最小(GM)结构是平面的,直到n = 3,并且笼子位于n = 4-6。在n = 6的GM结构中发现了T_d富勒烯。根据计算出的雾化能的分析,三维结构的稳定性随团簇的大小而增加。自适应自然密度分区给出的自然键合分析表明,在4元和6元环中存在离域π键,在笼和环的中心是芳族的。

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