期刊
CHEMICAL PHYSICS LETTERS
卷 592, 期 -, 页码 127-131出版社
ELSEVIER
DOI: 10.1016/j.cplett.2013.12.029
关键词
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资金
- NSFC [21273268]
- Hundred People Project of CAS, SINAP [Y290011011]
- Pu-Jiang Project of STCSM [13PJ1410400]
- NSF [EPS-1010674]
- ARL [W911NF1020099]
- Nebraska Research Initiative
- Holland Computing Center at University of Nebraska
We have performed a benchmark study of molecular O-2 binding on Au-n (n = 1-3) clusters using density-functional theory and high-level coupled-cluster calculations. Based on the computed structural and energetic properties of O2 binding on anionic, cationic, and neutral Aun (n = 1-3), we find that the hybrid functionals (HSE06, PBE0, and B3LYP) and the M06 functional with large basis sets give much more reasonable binding energy of O-2 and O-O bond length compared to GGA functionals (PBE and TPSS). In particular, the HSE06 functional gives the best agreement with CCSD(T)//MP2 method in O-2 binding energy on neutral Au-3. (C) 2013 Elsevier B.V. All rights reserved.
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