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

using model chemistry: PBEPBE_cp/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at PBEPBE_cp/6-31G*
 hartrees
Energy at 0K-191.899765
Energy at 298.15K-191.892126
Nuclear repulsion energy 
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 PBEPBE/6-31G*
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 3719 3666 42.13      
2 A 3600 3548 11.35      
3 A 3477 3427 263.04      
4 A 3051 3007 45.12      
5 A 2954 2911 84.75      
6 A 2912 2871 83.36      
7 A 1686 1662 71.11      
8 A 1498 1477 1.81      
9 A 1475 1454 1.19      
10 A 1462 1441 7.10      
11 A 1422 1401 44.68      
12 A 1148 1132 0.22      
13 A 1103 1087 6.99      
14 A 1063 1048 98.13      
15 A 826 814 63.52      
16 A 368 363 379.41      
17 A 236 233 48.26      
18 A 204 201 29.04      
19 A 166 164 88.37      
20 A 69 68 44.32      
21 A 46 45 67.08      

Unscaled Zero Point Vibrational Energy (zpe) 16241.9 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 16009.6 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 PBEPBE/6-31G*
ABC
1.24361 0.13256 0.12439

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.187 -0.229 0.415
O2 0.595 -0.631 -0.032
O3 -2.020 0.261 0.038
C4 1.643 0.328 0.011
H5 -2.498 -0.559 0.277
H6 -1.630 0.039 -0.834
H7 2.491 -0.091 -0.556
H8 1.368 1.298 -0.456
H9 1.996 0.536 1.044

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.98691.93381.95512.33801.92652.85252.34672.3971
O20.98692.76391.42073.10952.45812.03992.12032.1166
O31.93382.76393.66350.97850.98064.56373.57714.1488
C41.95511.42073.66354.24303.39251.10281.11121.1109
H52.33803.10950.97854.24301.53145.07994.35064.6880
H61.92652.45810.98063.39251.53144.13273.27344.1131
H72.85252.03994.56371.10285.07994.13271.78881.7878
H82.34672.12033.57711.11124.35063.27341.78881.7955
H92.39712.11664.14881.11094.68804.11311.78781.7955

picture of methanol water dimer state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.388      
2 O -0.615      
3 O -0.741      
4 C -0.262      
5 H 0.397      
6 H 0.396      
7 H 0.163      
8 H 0.135      
9 H 0.139      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.011 -0.230 -0.360 1.097
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 93.601
(<r2>)1/2 9.675