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All results from a given calculation for H2OCH3OH (water methanol dimer)

using model chemistry: HF/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 HF/6-31G*
 hartrees
Energy at 0K-191.055019
Energy at 298.15K-191.060394
HF Energy-191.055019
Counterpoise corrected energy-191.053500
CP Energy at 298.15K-191.058859
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy79.538925
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 HF/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 4161 3739 123.40      
2 A 4115 3697 60.90      
3 A 4028 3619 199.87      
4 A 3323 2986 36.36      
5 A 3262 2931 74.55      
6 A 3205 2880 55.24      
7 A 1853 1665 96.43      
8 A 1661 1492 2.93      
9 A 1650 1482 2.12      
10 A 1636 1470 11.21      
11 A 1504 1352 46.66      
12 A 1291 1160 3.09      
13 A 1171 1052 157.81      
14 A 1167 1049 8.46      
15 A 597 537 179.51      
16 A 397 357 96.53      
17 A 284 255 154.73      
18 A 176 158 2.63      
19 A 117 105 141.48      
20 A 46 41 30.40      
21 A 31 28 2.24      

Unscaled Zero Point Vibrational Energy (zpe) 17837.2 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 16026.7 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 HF/6-31G*
ABC
0.94774 0.13420 0.12203

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.224 0.191 0.027
O2 2.097 -0.181 0.106
O3 -0.720 0.680 -0.099
H4 2.541 0.048 -0.698
H5 -1.005 1.295 0.561
C6 -1.468 -0.507 0.002
H7 -2.522 -0.327 -0.191
H8 -1.088 -1.186 -0.747
H9 -1.357 -0.969 0.978

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 H7 H8 H9
H10.95192.00821.51022.54442.78143.78742.79952.9849
O20.95192.95220.94673.46523.58174.63023.44643.6483
O32.00822.95223.37470.94701.40682.06622.00872.0699
H41.51020.94673.37473.96424.10765.10163.83284.3630
H52.54443.46520.94703.96421.94322.34502.80612.3292
C62.78143.58171.40684.10761.94321.08561.08001.0853
H73.78744.63022.06625.10162.34501.08561.76131.7702
H82.79953.44642.00873.83282.80611.08001.76131.7586
H92.98493.64832.06994.36302.32921.08531.77021.7586

picture of water methanol dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 105.390 H1 O3 H5 113.951
H1 O3 C6 107.769 O2 H1 O3 171.022
O3 C6 H7 111.342 O3 C6 H8 107.018
O3 C6 H9 111.670 H5 O3 C6 109.744
H7 C6 H8 108.837 H7 C6 H9 109.260
H8 C6 H9 108.617
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.479      
2 O -0.926      
3 O -0.747      
4 H 0.423      
5 H 0.449      
6 C -0.178      
7 H 0.154      
8 H 0.186      
9 H 0.159      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.736 0.836 -0.375 2.885
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.598 1.790 -5.755
y 1.790 -18.391 1.949
z -5.755 1.949 -18.460
Traceless
 xyz
x -1.172 1.790 -5.755
y 1.790 0.638 1.949
z -5.755 1.949 0.534
Polar
3z2-r21.069
x2-y2-1.207
xy1.790
xz-5.755
yz1.949


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.309 -0.047 -0.226
y -0.047 2.746 0.062
z -0.226 0.062 2.785


<r2> (average value of r2) Å2
<r2> 94.544
(<r2>)1/2 9.723