Journal
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
Volume 16, Issue 1, Pages 468-474Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jctc.9b01065
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Funding
- National Research, Innovation and Development Fund (NKFIA) [124293]
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In a recent paper of this journal (Tajti; Szalay. J. Chem. Theory Comput. 2019, 15, 5523), we have shown that failures of the CC2 method to describe Rydberg excited states as well as potential energy surfaces of certain valence excited states can be cured by spin-component scaled (SCS) versions SCS-CC2 and SOS-CC2 to a large extent. In this paper, the related and popular second-order algebraic diagrammatic construction (ADC(2)) method and its SCS variants are inspected with the previously established methodology. The results reflect the similarity of the CC2 and ADC(2) models, showing identical problems in the case of the canonical form and the same improvement when spin-component scaling is applied.
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