Investigating the structures and properties of Au-Ge mixed clusters can give insight into the microscopic mechanisms in gold-catalyzed Ge films and can also provide valuable information for the production of germanium-based functional materials. In this work, size-selected anion photoelectron spectroscopy and theoretical calculations were used to explore the structural evolution and electronic properties of Au2Gen−/0 (n=1–8) clusters. It is found that the two Au atoms in Au2Gen−/0 (n=1–8) showed high coordination numbers and weak aurophilic interactions. The global minima of Au2Gen− anions and Au2Gen neutrals are in spin doublet and singlet states, respectively. Au2Gen− anions and Au2Gen neutrals showed similar structural features, except for Au2Ge4−/0 and Au2Ge5−/0. The C2v symmetric V-shaped structure is observed for Au2Ge1−/0, while Au2Ge2−/0 has a C2v symmetric dibridged structure. Au2Ge3−/0 can be viewed as the two Au atoms attached to different Ge–Ge bonds of Ge3 triangle. Au2Ge4− has two Au atoms edge-capping Ge4 tetrahedron, while Au2Ge4 neutral adopts a C2v symmetric double Au atoms face-capping Ge4 rhombus. Au2Ge5−8−/0 show triangular, tetragonal, and pentagonal prism-based geometries. Au2Ge6 adopts a C2v symmetric tetragonal prism structure and exhibits σ plus π double bonding characters.
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April 2019
Research Article|
April 01 2019
Structural evolution and electronic properties of Au2Gen−/0 (n=1−8) clusters: Anion photoelectron spectroscopy and theoretical calculations†
Sheng-Jie Lu;
Sheng-Jie Lu
*
a
Department of Chemistry and Chemical Engineering, Heze University
, Heze 274015, China
b
Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences
, Beijing 100190, China
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Umar Farooq;
Umar Farooq
b
Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences
, Beijing 100190, China
c
Department of Chemistry, COMSATS University Islamabad
, Abbottabad-Campus, Pakistan
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Hong-Guang Xu;
Hong-Guang Xu
b
Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences
, Beijing 100190, China
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Xi-Ling Xu;
Xi-Ling Xu
b
Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences
, Beijing 100190, China
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Wei-Jun Zheng
Wei-Jun Zheng
*
b
Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences
, Beijing 100190, China
d
University of Chinese Academy of Sciences
, Beijing 100049, China
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†
Part of the special issue for “the 19th International Symposium on Small Particles and Inorganic Clusters”
Chin. J. Chem. Phys. 32, 229–240 (2019)
Article history
Received:
February 27 2019
Accepted:
March 19 2019
Citation
Sheng-Jie Lu, Umar Farooq, Hong-Guang Xu, Xi-Ling Xu, Wei-Jun Zheng; Structural evolution and electronic properties of Au2Gen−/0 (n=1−8) clusters: Anion photoelectron spectroscopy and theoretical calculations. Chin. J. Chem. Phys. 1 April 2019; 32 (2): 229–240. https://doi.org/10.1063/1674-0068/cjcp1902036
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