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Citation: Cao Ze-Xing, Liang Guo-Ming, Tian An-Min, Yan Guo-Sen, Tang Ao-Qing, Li Qian-Shu. The Bonding Properties for Linear Carbon Element Clusters[J]. Acta Physico-Chimica Sinica, ;1993, 9(06): 770-775. doi: 10.3866/PKU.WHXB19930610 shu

The Bonding Properties for Linear Carbon Element Clusters

1.
Department of Chemistry, Sichuan University, Chengdu 610064; Department of Chemistry, Jilin University, Changchun 130023

Received Date: 29 April 1992
Available Online: 15 December 1993

At the level of ab initio 3-21G, the equilibrum geometries of linear carbon clusters C_n~e(n≤8, |e|≤2) have been optimized by using an energy gradient method. Ionization potentials obtained display odd-even alternations with the increase of carbon atoms in clusters. Based on ab initio calculations, occupied canonical molecular orbitals(CMO) are localized with Boys local-ization method. Analysis of the properties of LMOs shows that there are two-centre σ and π bonds, multi-centre σ and π bonds and bending bonds in the linear carbon clusters C_n~e. Such as this variety of bonding types could be considered as the character of bonding behavior for small carbon clusters. Furthermore, the relations between bonding properties and stabilities are discussed. It is shown that the conjugation of chemical bonds plays a significant role for the stabilities of small carbon element clusters.
- Carbon element clusters; Ionization potentials; Localization; Chemical bonds
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