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

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-191.646955
Energy at 298.15K-191.652349
HF Energy-191.104365
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy79.737794
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 MP2/6-311G*
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' 3859 3667 2.53      
2 A' 3770 3583 346.61      
3 A' 3174 3017 51.09      
4 A' 3032 2881 72.01      
5 A' 1739 1652 102.60      
6 A' 1561 1483 2.76      
7 A' 1529 1453 10.19      
8 A' 1501 1426 50.97      
9 A' 1151 1094 25.68      
10 A' 1116 1060 86.11      
11 A' 261 248 272.07      
12 A' 220 209 43.41      
13 A' 76 73 46.43      
14 A" 3993 3794 59.73      
15 A" 3090 2936 89.71      
16 A" 1541 1464 1.91      
17 A" 1203 1143 0.92      
18 A" 795 756 183.30      
19 A" 217 206 0.08      
20 A" 101 96 52.03      
21 A" 77 73 18.45      

Unscaled Zero Point Vibrational Energy (zpe) 17002.2 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 16157.1 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 MP2/6-311G*
ABC
1.03555 0.13749 0.12647

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.418 0.000
O2 -0.960 0.390 0.000
O3 1.968 0.527 0.000
C4 -1.357 -0.962 0.000
H5 2.271 1.004 0.773
H6 2.271 1.004 -0.773
H7 -2.447 -0.980 0.000
H8 -1.006 -1.506 -0.887
H9 -1.006 -1.506 0.887

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.96091.97081.93562.46942.46942.81842.34612.3461
O20.96092.93141.40903.37893.37892.02162.09422.0942
O31.97082.93143.64290.95730.95734.66503.71033.7103
C41.93561.40903.64294.19824.19821.09041.09841.0984
H52.46943.37890.95734.19821.54525.17644.44954.1299
H62.46943.37890.95734.19821.54525.17644.12994.4495
H72.81842.02164.66501.09045.17645.17641.77231.7723
H82.34612.09423.71031.09844.44954.12991.77231.7745
H92.34612.09423.71031.09844.12994.44951.77231.7745

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 108.028 H1 O3 H5 110.117
H1 O3 H6 110.117 O2 H1 O3 178.523
O2 C4 H7 107.276 O2 C4 H8 112.689
O2 C4 H9 112.689 H5 O3 H6 107.623
H7 C4 H8 108.129 H7 C4 H9 108.129
H8 C4 H9 107.752
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability