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26 Uracil ... Uracil (pi-pi)

From Dataset: S66: A Well-balanced Database of Benchmark Interaction Energies Relevant to Biomolecular Structure

Dataset reference: Řezáč, J., Riley, K.E., Hobza, P., J. Chem. Theory Comput. (2011), DOI: 10.1021/ct2002946

Optimization level: MP2/cc-pVTZ (interpolated CCSD(T)/CBS minimum)

Tags: dispersion pi-pi


Structure:

24

N    1.376901114   0.839747467   0.734624939
H    1.051812405   1.386223848   1.523355628
C    1.308982712   1.457529813  -0.520654996
O    0.920561362   2.611077765  -0.625976731
N    2.011422932  -1.213208303  -0.098071819
H    1.727285511   0.990842685  -2.611995560
C    2.025736871  -0.697171229  -1.364397399
H    2.297516982  -1.391060038  -2.145645314
C    1.714512349   0.591937798  -1.612487223
H    2.129454216  -2.201520905   0.056829125
C    1.645945031  -0.485205977   1.018718301
O    1.561116018  -0.971816376   2.129809048
N   -1.355460893  -0.836045936   0.734624939
H   -1.030372184  -1.382522317   1.523355628
C   -1.287542491  -1.453828282  -0.520654996
O   -0.899121141  -2.607376234  -0.625976731
N   -1.989982711   1.216909834  -0.098071819
H   -1.705845290  -0.987141154  -2.611995560
C   -2.004296650   0.700872760  -1.364397399
H   -2.276076761   1.394761569  -2.145645314
C   -1.693072128  -0.588236267  -1.612487223
H   -2.108013995   2.205222436   0.056829125
C   -1.624504810   0.488907508   1.018718301
O   -1.539675797   0.975517907   2.129809048

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Energies:

method counterpoise corrected remark value
CCSD(T)/CBS(aDZ) yes -9.829
CCSD(T)/CBS(haTZ) yes -9.771
CCSD(T)/CBS(haD->TZ) yes -9.752
MP2/cc-pVTZ yes -9.065
MP2/aug-cc-pVDZ yes -9.794
MP2/CBS yes -11.139
MP2C/CBS yes -9.371
SCS-MP2/CBS yes -8.251
SCS-MI-MP2/CBS yes -9.558
DW-MP2/CBS yes -9.824
MP3/CBS yes -7.801
MP2.5/CBS yes -9.47
CCSD/CBS yes -8.121
SCS-CCSD/CBS yes -9.395
SCS-MI-CCSD/CBS yes -9.712