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The structural and electronic properties of NbSin-/0 (n=3-12) clusters: anion photoelectron spectroscopy and ab initio calculations
Lu, Sheng-Jie1,2; Cao, Guo-Jin3; Xu, Xi-Ling1,2; Xu, Hong-Guang1,2; Zheng, Wei-Jun1,2
刊名NANOSCALE
2016
DOI10.1039/c6nr07480d
8期:47页:19769-19778
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
关键词[WOS]DOPED SILICON CLUSTERS ; BENZENE SANDWICH CLUSTERS ; DENSITY-FUNCTIONAL THEORY ; TRANSITION-METAL ATOMS ; MOLECULAR CALCULATIONS ; ASSEMBLED MATERIALS ; CAGE CLUSTERS ; SC ; COMPLEXES ; ORBITALS
英文摘要Niobium-doped silicon clusters, NbSin- (n = 3-12), were generated by laser vaporization and investigated by anion photoelectron spectroscopy. The structures and electronic properties of NbSin- anions and their neutral counterparts were investigated with ab initio calculations and compared with the experimental results. It is found that the Nb atom in NbSin-/0 prefers to occupy the high coordination sites to form more Nb-Si bonds. The most stable structures of NbSi3-7-/0 are all exohedral structures with the Nb atom face-capping the Si-n frameworks. At n = 8, both the anion and neutral adopt a boat-shaped structure and the openings of the boat-shaped structures remain unclosed in NbSi9-10-/0 clusters. The most stable structure of the NbSi11- anion is endohedral, while that of neutral NbSi11 is exohedral. The global minima of both the NbSi12- anion and neutral NbSi12 are D-6h symmetric hexagonal prisms with the Nb atom at the center. The perfect D-6h symmetric hexagonal prism of NbSi12- is electronically stable as it obeys the 18-electron rule and has a shell-closed electronic structure with a large HOMO-LUMO gap of 2.70 eV. The molecular orbital analysis of NbSi12- suggests that the delocalized Nb-Si-12 ligand interactions may contribute to the stability of the D-6h symmetric hexagonal prism. The AdNDP analysis shows that the delocalized 2c-2e Si-Si bonds and multicenter-2e NbSin bonds are important for the structural stability of the NbSi12- anion.
语种英语
WOS记录号WOS:000390095400033
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/151843
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Inst Chem, State Key Lab Mol React Dynam, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Shanxi Univ, Inst Mol Sci, Taiyuan 030006, Peoples R China
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GB/T 7714
Lu, Sheng-Jie,Cao, Guo-Jin,Xu, Xi-Ling,et al. The structural and electronic properties of NbSin-/0 (n=3-12) clusters: anion photoelectron spectroscopy and ab initio calculations[J]. NANOSCALE,2016,8(47):19769-19778.
APA Lu, Sheng-Jie,Cao, Guo-Jin,Xu, Xi-Ling,Xu, Hong-Guang,&Zheng, Wei-Jun.(2016).The structural and electronic properties of NbSin-/0 (n=3-12) clusters: anion photoelectron spectroscopy and ab initio calculations.NANOSCALE,8(47),19769-19778.
MLA Lu, Sheng-Jie,et al."The structural and electronic properties of NbSin-/0 (n=3-12) clusters: anion photoelectron spectroscopy and ab initio calculations".NANOSCALE 8.47(2016):19769-19778.
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