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XX.C.1.a.

Calculated Energies of Hydrogen-Bonded dimers

Dimer Name H Donor H Acceptor comment
H2OCH3OCH3 water dimethylether dimer H2O CH3OCH3
Energies in hartrees
Click on entry for more information.
The energies in each cell in the following tables are:
uncorrected 
cp correcteddiff
cp geometry optimzeddiff
The first entry is the calculated energy.
The second entry is the counterpoise corrected energy.
The third entry is the energy from the counterpoise corrected optimized geomtery.
Differences from the uncorrected energy are shown to the right in millihartrees.
Methods with predefined basis sets
Methods with standard basis sets
3-21G 6-31G* 6-31+G** 6-311+G(3df,2p) 6-311+G(3df,2pd) TZVP aug-cc-pVTZ
hartree fock HF
-228.8168003
-228.805063111.7372
-228.80902207.7783
-230.0839559
-230.08191312.0428
-230.08229271.6632
-230.1178858
-230.11646931.4165
-230.11700860.8772
-230.1907462
 
 
-230.1923543
-230.19113091.2234
-230.19186790.4863
-230.0839560
 
 
-230.1971502
-230.19627050.8797
-230.19700450.1457
density functional B3LYP
-230.1722494
-230.154932617.3168
-230.158822513.4269
-231.4451265
-231.44062174.5048
-231.44163453.4920
-231.4849801
-231.48241812.5620
-231.48390691.0732
  
-231.5609092
-231.55933871.5705
-231.5615468-0.6376
-231.5549996
 
 
-231.5670639
-231.56460472.4592
-231.56691340.1505
B3LYPultrafine
-230.1722524
-230.154899317.3531
-230.158822513.4299
-231.4451291
-231.44061604.5131
-231.44163453.4946
-231.4849723
-231.48242662.5457
-231.48390691.0654
  
-231.5620741
-231.55934772.7264
-231.56154780.5263
  
-231.5670536
-231.56460612.4475
-231.56691180.1418
PBEPBE
-229.8844284
-229.865335419.0930
-229.869449414.9790
-231.1560044
-231.15083355.1709
-231.15198934.0151
-231.1970193
-231.19385563.1637
-231.19570371.3156
  
-231.2711065
-231.26861672.4898
-231.27045990.6466
  
-231.2760474
-231.27308382.9636
-231.2760785-0.0311
PBEPBEultrafine
-229.8844205
-229.863645420.7751
-229.869447514.9730
-231.1559992
-231.15064215.3571
-231.15199174.0075
-231.1970149
-231.19399133.0236
-231.19570581.3091
  
-231.2711023
-231.26919651.9058
-231.27046170.6406
  
-231.2761623
-231.27433531.8270
-231.27608160.0807
Moller Plesset perturbation MP2FC
-229.2440317
-229.226887217.1445
 
-230.7122110
-230.70724184.9692
 
-230.8058903
-230.80297412.9162
 
  
-231.0605940
-231.05794002.6539
 
-230.9185240
 
 
-231.0771020
-231.07504692.0551
 
For descriptions of the methods (AM1, HF, MP2, ...) and basis sets (3-21G, 3-21G*, 6-31G, ...) see the glossary in section I.C. Predefined means the basis set used is determined by the method.