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

using model chemistry: MP2/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2/Def2TZVPP
 hartrees
Energy at 0K-191.854328
Energy at 298.15K-191.859434
HF Energy-191.163095
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy78.881330
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 MP2/Def2TZVPP
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' 3843 3657 7.73      
2 A' 3765 3583 408.27      
3 A' 3174 3020 34.86      
4 A' 3047 2900 62.84      
5 A' 1644 1564 65.61      
6 A' 1537 1462 2.72      
7 A' 1498 1425 5.05      
8 A' 1444 1374 30.69      
9 A' 1131 1077 4.98      
10 A' 1091 1038 101.17      
11 A' 242 230 200.02      
12 A' 167 159 17.23      
13 A' 67 64 31.50      
14 A" 3962 3770 88.16      
15 A" 3110 2959 58.16      
16 A" 1519 1446 1.60      
17 A" 1192 1134 0.72      
18 A" 671 638 117.32      
19 A" 179 171 0.47      
20 A" 77 73 26.74      
21 A" 73 69 32.63      

Unscaled Zero Point Vibrational Energy (zpe) 16716.0 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 15905.3 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 MP2/Def2TZVPP
ABC
1.05881 0.12967 0.12003

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.402 0.000
O2 -0.962 0.384 0.000
O3 1.989 0.528 0.000
C4 -1.377 -0.963 0.000
H5 2.290 1.029 0.759
H6 2.290 1.029 -0.759
H7 -2.463 -0.969 0.000
H8 -1.035 -1.507 -0.884
H9 -1.035 -1.507 0.884

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.96251.99341.93872.49292.49292.81922.34472.3447
O20.96252.95521.40973.40163.40162.02132.08942.0894
O31.99342.95523.68190.95780.95784.69783.75143.7514
C41.93871.40973.68194.24194.24191.08641.09291.0929
H52.49293.40160.95784.24191.51755.21224.49364.1844
H62.49293.40160.95784.24191.51755.21224.18444.4936
H72.81922.02134.69781.08645.21225.21221.76371.7637
H82.34472.08943.75141.09294.49364.18441.76371.7677
H92.34472.08943.75141.09294.18444.49361.76371.7677

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 108.142 H1 O3 H5 110.286
H1 O3 H6 110.286 O2 H1 O3 177.392
O2 C4 H7 107.439 O2 C4 H8 112.589
O2 C4 H9 112.589 H5 O3 H6 104.784
H7 C4 H8 108.054 H7 C4 H9 108.054
H8 C4 H9 107.936
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability