期刊
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
卷 7, 期 2, 页码 456-466出版社
AMER CHEMICAL SOC
DOI: 10.1021/ct100662n
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In this work, we compare a large variety of density functionals against the equation of motion coupled cluster singles and doubles (EOM-CCSD) method for the calculation of oscillator strengths. Valence and Rydberg states are considered for a test set composed of 11 small organic molecules. In our previous work, the same systems and methods were tested against experimental results for the excitation energies. The results from this investigation confirm our previous findings, i.e., that there is a large difference between the functionals. For the oscillator strength, the average best agreement with EOM-CCSD is provided by CAM-B3LYP followed by LC-omega PBE and, to a lesser extent, B3P86 and LC-BLYP.
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