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All results from a given calculation for CH3OHH2O (methanol water dimer)

using model chemistry: MP3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP3/6-31+G**
 hartrees
Energy at 0K-191.636421
Energy at 298.15K-191.641686
HF Energy-191.077730
Nuclear repulsion energy78.579006
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP3/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3935 3662 9.14      
2 A' 3887 3617 310.20      
3 A' 3221 2997 49.19      
4 A' 3093 2878 60.68      
5 A' 1701 1582 83.52      
6 A' 1583 1473 1.72      
7 A' 1546 1439 9.86      
8 A' 1492 1388 51.12      
9 A' 1152 1072 0.77      
10 A' 1130 1051 103.03      
11 A' 294 274 268.86      
12 A' 176 164 5.06      
13 A' 62 58 47.82      
14 A" 4046 3765 52.97      
15 A" 3151 2932 83.16      
16 A" 1566 1457 0.47      
17 A" 1216 1131 2.22      
18 A" 709 659 142.28      
19 A" 214 199 4.02      
20 A" 98 91 25.09      
21 A" 55 51 54.90      

Unscaled Zero Point Vibrational Energy (zpe) 17162.6 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 15969.8 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP3/6-31+G**
ABC
1.13537 0.12475 0.11667

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.409 0.000
O2 -0.962 0.397 0.000
O3 1.992 0.506 0.000
C4 -1.379 -0.949 0.000
H5 2.294 1.005 0.762
H6 2.294 1.005 -0.762
H7 -2.467 -0.952 0.000
H8 -1.043 -1.499 -0.885
H9 -1.043 -1.499 0.885

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.96231.99481.93582.48932.48932.81732.34742.3474
O20.96232.95661.40963.39873.39872.02072.09382.0938
O31.99482.95663.67250.95890.95894.69173.74393.7439
C41.93581.40963.67254.22974.22971.08771.09451.0945
H52.48933.39870.95894.22971.52375.20314.48474.1733
H62.48933.39870.95894.22971.52375.20314.17334.4847
H72.81732.02074.69171.08775.20315.20311.76361.7636
H82.34742.09383.74391.09454.48474.17331.76361.7697
H92.34742.09383.74391.09454.17334.48471.76361.7697

picture of methanol water dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 C4 107.916 H1 O3 H5 109.836
H1 O3 H6 109.836 O2 H1 O3 177.906
O2 C4 H7 107.329 O2 C4 H8 112.868
O2 C4 H9 112.868 H5 O3 H6 105.211
H7 C4 H8 107.835 H7 C4 H9 107.835
H8 C4 H9 107.883
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability