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20 AcOH ... AcOH

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: 2 h-bond


Structure:

16

C   -1.061709204   1.297140572   0.292060003
O   -0.358161116   2.270458613   0.531812668
O   -0.589303516   0.094917758   0.003788813
H    0.404435659   0.127722621   0.018411838
C   -2.558427798   1.342549823   0.296257320
H   -2.895997978   2.347464002   0.518316340
H   -2.932889278   1.022390451  -0.672995551
H   -2.937211960   0.644910433   1.039557084
C    2.789348447   1.108419242   0.271183758
O    2.085730082   0.135104754   0.031396156
O    2.316922113   2.310854630   0.558962229
H    1.323133573   2.277956396   0.544561725
C    4.286060895   1.062516496   0.269219363
H    4.623640459   0.061197303   0.031693868
H    4.667559440   1.772869435  -0.460249535
H    4.657577206   1.365211013   1.245274724

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Energies:

method counterpoise corrected remark value
CCSD(T)/CBS(aDZ) yes -19.093
CCSD(T)/CBS(haTZ) yes -19.301
CCSD(T)/CBS(haD->TZ) yes -19.415
MP2/cc-pVTZ yes -17.362
MP2/aug-cc-pVDZ yes -16.643
MP2/CBS yes -19
MP2C/CBS yes -18.982
SCS-MP2/CBS yes -17.309
SCS-MI-MP2/CBS yes -19.396
DW-MP2/CBS yes -19
MP3/CBS yes -19.222
MP2.5/CBS yes -19.111
CCSD/CBS yes -18.385
SCS-CCSD/CBS yes -18.194
SCS-MI-CCSD/CBS yes -18.979