title: Geometry and stability of Cu(n)N (n=1-6) and Cu(3n)N(n) (n=1-5) clusters.
abstract: The gradient-corrected density functional calculation is applied to search the lowest-energy configurations of Cu(n)N (n=1-6) clusters and the calculation indicated that Cu(3)N cluster is the most stable one. Based on the result, we further investigate the equilibrium geometries and stabilities of the Cu(3n)N(n) (n=2-5) clusters. We found that in Cu(6)N(2) cluster, N atoms formed a separate N(2) molecule away from the other part of the cluster. Furthermore, it was shown that the lowest-energy configurations of Cu(3n)N(n) (n=3-5) are stable with the nitrogen atoms well separated by the copper atoms. Therefore, it can be concluded that the Cu(3)N cluster can be used as a building block for the construction of the cluster-assembled compounds.
authors.affiliation: Center for Low-Dimensional Materials, Micro-Nano Devices and System, Jiangsu Polytechnic University, 1 Ge Hu Road, Changzhou, Jiangsu 213164, China. dingjn@jpu.edu.cn
authors.forename: Jian-Ning
authors.initials: JN
authors.lastname: Ding
authors.forename: Ning-Yi
authors.initials: NY
authors.lastname: Yuan
authors.forename: Feng
authors.initials: F
authors.lastname: Li
authors.forename: Gu-Qiao
authors.initials: GQ
authors.lastname: Ding
authors.forename: Zhi-Gang
authors.initials: ZG
authors.lastname: Chen
authors.forename: Xiao-Shuang
authors.initials: XS
authors.lastname: Chen
authors.forename: Wei
authors.initials: W
authors.lastname: Lu