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C_nN_4(n=2~10)团簇的结构和性质的密度泛函理论研究

A DFT Study on the Structures and Properties of C_nN_4(n=2~10) Clusters
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摘要 利用B3LYP/6-31G(d)//CCSD(T)/6-31G(d)方法计算了5个系列的氮掺杂碳团簇CnN4(n=2~10)的结构、能量和物理性质,并对优化的结构进行了频率分析。计算结果表明,系列1、系列4和系列5的结构和性质表现出不同程度的奇偶交替变化。根据相对能量、成键能、垂直电离能、垂直电子亲合能、前线轨道能隙等性质对5个系列的团簇的结构、稳定性和得失电子能力进行了讨论。 Geometries, energies, physical properties of five classes of CnN4( n = 2~10) clusters are computed using the B3LYP/6- 31G(d)//CCSD(T)/6- 31G (d) method followed by vibrational frequency analysis. Results demonstrate that the geometries and properties of the clusters of series 1,4, and 5 exhibit odd/even alternation change. The structures, stabilities, and abilities of push-pull electron of these clusters are discussed based on the relative energy separation, binding energy per atom, vertical ionization energy, vertical electron affinity, and energy gap of frontier orbitals (HOMO and LUMO).
出处 《南京师大学报(自然科学版)》 CAS CSCD 北大核心 2008年第3期81-85,共5页 Journal of Nanjing Normal University(Natural Science Edition)
基金 江苏省科技厅自然科学基金(BK2005118)资助项目
关键词 氮化碳团簇 密度泛函理论 电离能 电子亲合能 Carbon nitride cluster, DFT, ionization energy, electron affinity
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参考文献24

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