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Volumn 113, Issue 18, 2009, Pages 5476-5484

Binding in thiophene and benzothiophene dimers investigated by density functional theory with dispersion-correcting potentials

Author keywords

[No Author keywords available]

Indexed keywords

BENZOTHIOPHENE; CCSD; COPLANAR STRUCTURE; DENSITY-FUNCTIONAL APPROACH; DIBENZOTHIOPHENE; DIMER STRUCTURE; DIPOLE INTERACTION; DISPERSION CORRECTION; DISPERSION FORCE; LOWEST ENERGY STRUCTURE; NONCOVALENT BINDING; OPTIMIZED GEOMETRIES; POTENTIAL ENERGY LANDSCAPES; STRUCTURAL MOTIFS;

EID: 65549126016     PISSN: 10895639     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp901001w     Document Type: Article
Times cited : (20)

References (44)
  • 16
    • 57049167560 scopus 로고    scopus 로고
    • Efforts to incorporate dispersion in similar ways are shown in the recent works
    • (a)Efforts to incorporate dispersion in similar ways are shown in the recent works: (a) Wodrich, M. D.; Jana, D. F.; Schleyer, P. v. R.; Corminboeuf, C. J. Phys. Chem. A 2008, 112, 11495-11500.
    • (2008) J. Phys. Chem. A , vol.112 , pp. 11495-11500
    • Wodrich, M.D.1    Jana, D.F.2    Schleyer, P.V.R.3    Corminboeuf, C.J.4
  • 32
    • 65649143961 scopus 로고    scopus 로고
    • Note
    • Without DCPs these structures relax to T-shaped dimers, similar in structure to 12p.
  • 33
    • 65649145833 scopus 로고    scopus 로고
    • As a check we computed the BE for this structure (using the B971/ 6-31 +G(d,p)-DCP-optimized monomer and dimer structures) using an estimated CCSD(T)/CBS approach we have used in the past. The procedure used can be summarized as follows: (1) Single-point energies are calculated using counterpoise-corrected,30 MP2/aug-cc-pVQZ and MP2/aug-cc-pVTZ; (2) CBS extrapolated energies, ECBS, are determined with the MP2 energies from 1 using the extrapolation scheme described in ref 31; ( the extrapolation correction, AEextrap, is determined by subtracting E(MP2/aug- cc-pVTZ) from ECBS; ( the final system energy is determined by summing counterpoise-corrected, E(CCSD(T)/aug-cc-pVTZ and AEextrap. Energies so obtained for the monomer and dimer species are used to obtain a BE = 3.5 kcal/mol for 12p: Our DCP-derived BE is within ca. 14% of this value
    • As a check we computed the BE for this structure (using the B971/ 6-31 +G(d,p)-DCP-optimized monomer and dimer structures) using an estimated CCSD(T)/CBS approach we have used in the past. The procedure used can be summarized as follows: (1) Single-point energies are calculated using counterpoise-corrected,30 MP2/aug-cc-pVQZ and MP2/aug-cc-pVTZ; (2) CBS extrapolated energies, ECBS, are determined with the MP2 energies from 1 using the extrapolation scheme described in ref 31; (3) the extrapolation correction, AEextrap, is determined by subtracting E(MP2/aug- cc-pVTZ) from ECBS; (4) the final system energy is determined by summing counterpoise-corrected, E(CCSD(T)/aug-cc-pVTZ and AEextrap. Energies so obtained for the monomer and dimer species are used to obtain a BE = 3.5 kcal/mol for 12p: Our DCP-derived BE is within ca. 14% of this value.
  • 40
    • 65649105541 scopus 로고    scopus 로고
    • See footnote g of Table 3 of ref 34
    • See footnote g of Table 3 of ref 34.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.