We measured the photoelectron spectra of AlnC4− (n=2-4) clusters by using size-selected anion photoelectron spectroscopy. The structures of AlnC4−/0 (n = 2–4) clusters were explored with quantum chemistry calculations and were determined by comparing the theoretical results with the experimental spectra. It is found that the most stable structure of Al2C4− anion is a C2v symmetry planar structure with two Al atoms interacting with two C2 units. In addition, Al2C4− anion also has a D∞h symmetry linear structure with two Al atoms located at the two ends of a C4 chain, which is slightly higher in energy than the planar structure. The most stable structure of neutral Al2C4 has a D∞h symmetry linear structure. The most stable structure of Al3C4− anion is a planar structure with three Al atoms interacting with two C2 units. Whereas neutral Al3C4 cluster has a C2v symmetric V-shaped bent structure. The global minima structures of both Al4C4− and neutral Al4C4 are C2h symmetry planar structures with four Al atoms interacting with the ends of two C2 units. Adaptive natural density partitioning analyses of AlnC4− (n=2−4) clusters show that the interactions between the Al atoms and C2 units have both σ and π characters.
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December 2021
Research Article|
December 01 2021
Structural and bonding properties of AlnC4−/0 (n = 2–4) clusters: Anion photoelectron spectroscopy and theoretical calculations†
Special Collection:
Virtual issue on Molecular Spectroscopy
Chao-jiang Zhang;
Chao-jiang Zhang
a
Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences
, Beijing 100190, China
b
University of Chinese Academy of Sciences
, Beijing 100049, China
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Shuai-ting Yan;
Shuai-ting Yan
a
Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences
, Beijing 100190, China
b
University of Chinese Academy of Sciences
, Beijing 100049, China
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Hong-guang Xu;
Hong-guang Xu
a
Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences
, Beijing 100190, China
b
University of Chinese Academy of Sciences
, Beijing 100049, China
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Xi-ling Xu;
Xi-ling Xu
*
a
Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences
, Beijing 100190, China
b
University of Chinese Academy of Sciences
, Beijing 100049, China
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Wei-jun Zheng
Wei-jun Zheng
*
a
Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences
, Beijing 100190, China
b
University of Chinese Academy of Sciences
, Beijing 100049, China
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†
Part of Special Issue “John Z.H. Zhang Festschrift for celebrating his 60th birthday”.
Chin. J. Chem. Phys. 34, 769–776 (2021)
Article history
Received:
October 04 2021
Accepted:
October 31 2021
Citation
Chao-jiang Zhang, Shuai-ting Yan, Hong-guang Xu, Xi-ling Xu, Wei-jun Zheng; Structural and bonding properties of AlnC4−/0 (n = 2–4) clusters: Anion photoelectron spectroscopy and theoretical calculations. Chin. J. Chem. Phys. 1 December 2021; 34 (6): 769–776. https://doi.org/10.1063/1674-0068/cjcp2110185
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