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

using model chemistry: MP2_cp_opt/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 MP2_cp_opt/6-31+G**
 hartrees
Energy at 0K-191.634114
Energy at 298.15K-191.639100
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 MP2_cp_opt/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' 3864 3635 7.86      
2 A' 3820 3593 313.32      
3 A' 3235 3043 35.51      
4 A' 3093 2909 69.99      
5 A' 1632 1535 96.38      
6 A' 1562 1469 2.94      
7 A' 1521 1431 10.63      
8 A' 1423 1338 30.10      
9 A' 1122 1056 13.30      
10 A' 1085 1021 109.20      
11 A' 218 205 268.42      
12 A' 143 134 23.99      
13 A' 56 52 48.28      
14 A" 4006 3768 87.77      
15 A" 3166 2978 61.59      
16 A" 1548 1456 1.34      
17 A" 1200 1128 0.82      
18 A" 643 605 173.87      
19 A" 182 171 4.89      
20 A" 84 79 40.46      
21 A" 60 57 23.54      

Unscaled Zero Point Vibrational Energy (zpe) 16831.1 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 15831.3 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_cp_opt/6-31+G**
ABC
1.06125 0.11997 0.11176

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2_cp_opt/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.418 0.000
O2 -0.968 0.447 0.000
O3 2.048 0.423 0.000
C4 -1.457 -0.890 0.000
H5 2.458 0.835 0.769
H6 2.458 0.835 -0.769
H7 -2.542 -0.827 0.000
H8 -1.137 -1.440 -0.889
H9 -1.137 -1.440 0.889

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.96892.04841.95762.60932.60932.82972.35232.3523
O20.96893.01691.42403.53323.53322.02442.09302.0930
O32.04843.01693.74280.96380.96384.75683.79563.7956
C41.95761.42403.74284.34674.34671.08671.09271.0927
H52.60933.53320.96384.34671.53745.32444.56614.2564
H62.60933.53320.96384.34671.53745.32444.25644.5661
H72.82972.02444.75681.08675.32445.32441.77141.7714
H82.35232.09303.79561.09274.56614.25641.77141.7773
H92.35232.09303.79561.09274.25644.56611.77141.7773

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 108.286 H1 O3 H5 115.239
H1 O3 H6 115.239 O2 H1 O3 178.092
O2 C4 H7 106.702 O2 C4 H8 111.861
O2 C4 H9 111.861 H5 O3 H6 105.800
H7 C4 H8 108.741 H7 C4 H9 108.741
H8 C4 H9 108.832
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2_cp_opt/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.735      
4 C 0.000      
5 H 0.368      
6 H 0.368      
7 H 0.000      
8 H 0.000      
9 H 0.000      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.157 -0.042 0.000 3.157
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.212 7.947 0.000
y 7.947 -19.291 0.000
z 0.000 0.000 -18.042
Traceless
 xyz
x 5.455 7.947 0.000
y 7.947 -3.664 0.000
z 0.000 0.000 -1.791
Polar
3z2-r2-3.583
x2-y26.079
xy7.947
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.960 -0.000 0.000
y -0.000 0.953 0.000
z 0.000 0.000 1.137


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000