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

using model chemistry: B3LYP/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 B3LYP/6-31+G**
 hartrees
Energy at 0K-192.178049
Energy at 298.15K-192.183305
Counterpoise corrected energy-192.176682
CP Energy at 298.15K-192.181754
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy78.326272
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/6-31+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' 3810 3673 10.15      
2 A' 3713 3580 422.56      
3 A' 3113 3002 44.06      
4 A' 2988 2881 86.22      
5 A' 1618 1560 93.35      
6 A' 1513 1459 3.52      
7 A' 1484 1431 9.53      
8 A' 1410 1359 40.36      
9 A' 1112 1073 16.74      
10 A' 1071 1032 111.53      
11 A' 275 265 249.93      
12 A' 174 168 11.51      
13 A' 80 78 34.27      
14 A" 3926 3785 86.10      
15 A" 3034 2925 77.96      
16 A" 1500 1446 1.78      
17 A" 1175 1133 0.28      
18 A" 713 687 169.73      
19 A" 213 205 1.33      
20 A" 92 89 13.50      
21 A" 67 64 49.64      

Unscaled Zero Point Vibrational Energy (zpe) 16539.9 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 15947.8 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 B3LYP/6-31+G**
ABC
1.11857 0.12541 0.11717

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.382 0.000
O2 -0.966 0.270 0.000
O3 1.891 0.761 0.000
C4 -1.274 -1.115 0.000
H5 2.187 1.260 0.772
H6 2.187 1.260 -0.772
H7 -2.363 -1.204 0.000
H8 -0.886 -1.628 -0.893
H9 -0.886 -1.628 0.893

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.97201.92851.96562.48002.48002.84652.37142.3714
O20.97202.89831.41913.39343.39342.03182.09932.0993
O31.92852.89833.67880.96570.96574.68633.77063.7706
C41.96561.41913.67884.26784.26781.09341.10011.1001
H52.48003.39340.96574.26781.54375.23234.53424.2193
H62.48003.39340.96574.26781.54375.23234.21934.5342
H72.84652.03184.68631.09345.23235.23231.77721.7772
H82.37142.09933.77061.10014.53424.21931.77721.7853
H92.37142.09933.77061.10014.21934.53421.77721.7853

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 109.150 H1 O3 H5 113.728
H1 O3 H6 113.728 O2 H1 O3 175.282
O2 C4 H7 107.223 O2 C4 H8 112.264
O2 C4 H9 112.264 H5 O3 H6 106.114
H7 C4 H8 108.235 H7 C4 H9 108.235
H8 C4 H9 108.468
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.414      
2 O -0.573      
3 O -0.759      
4 C -0.208      
5 H 0.375      
6 H 0.375      
7 H 0.138      
8 H 0.119      
9 H 0.119      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.958 0.686 0.000 3.036
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.968 7.988 0.000
y 7.988 -16.998 0.000
z 0.000 0.000 -18.483
Traceless
 xyz
x 0.772 7.988 0.000
y 7.988 0.728 0.000
z 0.000 0.000 -1.500
Polar
3z2-r2-3.000
x2-y20.030
xy7.988
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.218 0.384 0.000
y 0.384 4.026 0.000
z 0.000 0.000 3.692


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