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

using model chemistry: MP2_cp/6-311+G(3df,2pd)

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/6-311+G(3df,2pd)
 hartrees
Energy at 0K-191.850797
Energy at 298.15K-191.842643
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 MP2/6-311+G(3df,2pd)
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' 3862 3669 9.29      
2 A' 3790 3601 421.71      
3 A' 3171 3012 29.98      
4 A' 3042 2890 65.40      
5 A' 1632 1551 72.43      
6 A' 1536 1459 3.69      
7 A' 1494 1419 4.45      
8 A' 1431 1359 30.22      
9 A' 1128 1071 4.51      
10 A' 1093 1038 104.12      
11 A' 227 216 189.61      
12 A' 167 158 14.60      
13 A' 66 63 37.81      
14 A" 3975 3776 100.09      
15 A" 3109 2954 49.39      
16 A" 1523 1447 2.59      
17 A" 1193 1133 0.62      
18 A" 692 657 116.39      
19 A" 189 179 1.40      
20 A" 88 84 12.22      
21 A" 71 68 43.89      

Unscaled Zero Point Vibrational Energy (zpe) 16738.8 cm-1
Scaled (by 0.95) Zero Point Vibrational Energy (zpe) 15901.8 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 MP2/6-311+G(3df,2pd)
ABC
1.08362 0.12795 0.11887

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311+G(3df,2pd)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.407 0.000
O2 -0.963 0.351 0.000
O3 1.929 0.605 0.000
C4 -1.321 -1.016 0.000
H5 2.255 1.092 0.759
H6 2.255 1.092 -0.759
H7 -2.406 -1.066 0.000
H8 -0.953 -1.537 -0.887
H9 -0.953 -1.537 0.887

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.96451.93871.94152.47652.47652.82082.33932.3393
O20.96452.90261.41333.38873.38872.02222.08582.0858
O31.93872.90263.63120.95950.95954.64523.69813.6981
C41.94151.41333.63124.22034.22031.08631.09201.0920
H52.47653.38870.95954.22031.51815.19244.46254.1500
H62.47653.38870.95954.22031.51815.19244.15004.4625
H72.82082.02224.64521.08635.19245.19241.76621.7662
H82.33932.08583.69811.09204.46254.15001.76621.7732
H92.33932.08583.69811.09204.15004.46251.76621.7732

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 MP2/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.264      
2 O -0.674      
3 O -0.288      
4 C 0.412      
5 H 0.136      
6 H 0.136      
7 H 0.005      
8 H 0.005      
9 H 0.005      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.890 0.471 0.000 2.928
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> 0.000
(<r2>)1/2 0.000