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

using model chemistry: B3LYP/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 B3LYP/6-31G*
 hartrees
Energy at 0K-192.135671
Energy at 298.15K-192.140959
Counterpoise corrected energy-192.132673
CP Energy at 298.15K-192.138002
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy78.715526
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 B3LYP/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' 3721 3574 9.19      
2 A' 3617 3474 387.76      
3 A' 3110 2987 56.08      
4 A' 2980 2862 82.14      
5 A' 1708 1640 81.38      
6 A' 1545 1484 1.69      
7 A' 1513 1453 8.66      
8 A' 1464 1406 56.75      
9 A' 1134 1089 9.98      
10 A' 1094 1050 103.05      
11 A' 336 323 290.14      
12 A' 193 185 2.27      
13 A' 64 61 55.71      
14 A" 3837 3685 46.29      
15 A" 3016 2896 101.17      
16 A" 1525 1464 0.65      
17 A" 1186 1139 0.91      
18 A" 742 712 125.21      
19 A" 218 209 15.02      
20 A" 101 97 48.49      
21 A" 28 27 30.93      

Unscaled Zero Point Vibrational Energy (zpe) 16566.4 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 15908.7 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 B3LYP/6-31G*
ABC
1.22212 0.12532 0.11809

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.270 0.000
O2 -0.918 -0.064 0.000
O3 1.560 1.359 0.000
C4 -0.867 -1.475 0.000
H5 1.346 1.916 0.765
H6 1.346 1.916 -0.765
H7 -1.899 -1.841 0.000
H8 -0.364 -1.887 -0.891
H9 -0.364 -1.887 0.891

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.97691.90311.94852.25982.25982.83932.36162.3616
O20.97692.85801.41243.10333.10332.03002.10342.1034
O31.90312.85803.73180.97030.97034.71273.87733.8773
C41.94851.41243.73184.12114.12111.09491.10291.1029
H52.25983.10330.97034.12111.52995.02304.48644.1715
H62.25983.10330.97034.12111.52995.02304.17154.4864
H72.83932.03004.71271.09495.02305.02301.77551.7755
H82.36162.10343.87731.10294.48644.17151.77551.7822
H92.36162.10343.87731.10294.17154.48641.77551.7822

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 107.889 H1 O3 H5 98.465
H1 O3 H6 98.465 O2 H1 O3 165.043
O2 C4 H7 107.441 O2 C4 H8 112.915
O2 C4 H9 112.915 H5 O3 H6 104.075
H7 C4 H8 107.772 H7 C4 H9 107.772
H8 C4 H9 107.794
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.409      
2 O -0.660      
3 O -0.754      
4 C -0.195      
5 H 0.409      
6 H 0.409      
7 H 0.146      
8 H 0.118      
9 H 0.118      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.377 1.745 0.000 2.223
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.422 3.565 0.000
y 3.565 -11.540 0.000
z 0.000 0.000 -17.872
Traceless
 xyz
x -8.716 3.565 0.000
y 3.565 9.108 0.000
z 0.000 0.000 -0.391
Polar
3z2-r2-0.783
x2-y2-11.882
xy3.565
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.132 0.403 0.000
y 0.403 3.629 0.000
z 0.000 0.000 3.096


<r2> (average value of r2) Å2
<r2> 97.781
(<r2>)1/2 9.888