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

using model chemistry: MP2_cp_opt/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_opt/6-311+G(3df,2pd)
 hartrees
Energy at 0K-191.851518
Energy at 298.15K-191.856535
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/6-311+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' 3866 3673 8.73      
2 A' 3807 3617 381.04      
3 A' 3172 3013 29.65      
4 A' 3043 2891 64.15      
5 A' 1633 1552 71.39      
6 A' 1536 1459 3.80      
7 A' 1494 1420 4.40      
8 A' 1423 1352 26.74      
9 A' 1123 1067 2.52      
10 A' 1091 1037 106.11      
11 A' 217 206 198.26      
12 A' 153 145 17.03      
13 A' 61 58 34.59      
14 A" 3978 3779 97.82      
15 A" 3111 2955 49.02      
16 A" 1523 1447 2.60      
17 A" 1193 1133 0.61      
18 A" 648 616 114.00      
19 A" 177 168 1.70      
20 A" 81 77 21.88      
21 A" 67 64 33.98      

Unscaled Zero Point Vibrational Energy (zpe) 16697.7 cm-1
Scaled (by 0.95) Zero Point Vibrational Energy (zpe) 15862.8 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_cp_opt/6-311+G(3df,2pd)
ABC
1.06668 0.12544 0.11650

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2_cp_opt/6-311+G(3df,2pd)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.421 0.000
O2 -0.964 0.411 0.000
O3 1.984 0.489 0.000
C4 -1.386 -0.937 0.000
H5 2.357 0.942 0.759
H6 2.357 0.942 -0.759
H7 -2.473 -0.934 0.000
H8 -1.044 -1.475 -0.887
H9 -1.044 -1.475 0.887

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.96371.98531.94062.53032.53032.81942.33852.3385
O20.96372.94881.41363.44723.44722.02182.08592.0859
O31.98532.94883.65980.95930.95934.67843.71643.7164
C41.94061.41363.65984.25684.25681.08631.09191.0919
H52.53033.44720.95934.25681.51745.23644.48504.1742
H62.53033.44720.95934.25681.51745.23644.17424.4850
H72.81942.02184.67841.08635.23645.23641.76631.7663
H82.33852.08593.71641.09194.48504.17421.76631.7733
H92.33852.08593.71641.09194.17424.48501.76631.7733

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 107.939 H1 O3 H5 113.862
H1 O3 H6 113.862 O2 H1 O3 178.569
O2 C4 H7 107.227 O2 C4 H8 112.081
O2 C4 H9 112.081 H5 O3 H6 104.545
H7 C4 H8 108.366 H7 C4 H9 108.366
H8 C4 H9 108.588
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2_cp_opt/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.307      
4 C 0.000      
5 H 0.154      
6 H 0.154      
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
  2.954 0.251 0.000 2.965
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.602 7.341 0.000
y 7.341 -18.658 0.000
z 0.000 0.000 -17.975
Traceless
 xyz
x 3.714 7.341 0.000
y 7.341 -2.370 0.000
z 0.000 0.000 -1.345
Polar
3z2-r2-2.689
x2-y24.056
xy7.341
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.221 0.000 0.000
y 0.000 1.227 0.000
z 0.000 0.000 1.363


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