Journal
NEW JOURNAL OF CHEMISTRY
Volume 45, Issue 11, Pages 5266-5271Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1nj00214g
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Funding
- Natural Science Foundation of Shandong Province, China [ZR2018BB040]
- Beijing National Laboratory for Molecular Sciences [Z191100007219009, BNLMS201804]
- Research Start-up Funds (Doctoral Science Foundation) of Heze University [XY18BS02]
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Anion photoelectron spectroscopy, quantum chemistry calculations, and a particle swarm optimization algorithm were used to investigate the structural and bonding properties of TaSi16-/0 clusters. The results showed that both the TaSi16- anion and TaSi16 neutral have a fullerene-like cage structure with double delocalized bonding patterns and aromaticity. TaSi16- was also identified as a superatom cluster with a closed-shell electron configuration.
Anion photoelectron spectroscopy combined with quantum chemistry calculations and a particle swarm optimization (CALYPSO) global search algorithm were used to investigate the structural and bonding properties of TaSi16-/0 clusters. The vertical detachment energy (VDE) of TaSi16- was measured to be 3.81 +/- 0.08 eV. The global minima of the TaSi16- anion and TaSi16 neutral are confirmed to be a fullerene-like cage structure with the central Ta atom coordinated with nine Si atoms. Molecular orbital analysis shows that TaSi16- possesses sigma + pi double delocalized bonding patterns and has a large HOMO-LUMO gap. TaSi16- can be viewed as a superatom cluster due to the closed-shell electron configuration of |1S(2)|1P(6)|1D(10)|2S(2)|1F(14)|2P(6)|2D(10)|1G(18)|3S(2)| in terms of the jellium model. Theoretical calculations indicate that both the TaSi16- anion and TaSi16 neutral have aromaticity.
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