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

using model chemistry: HF_cp_opt/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_cp_opt/6-31G*
 hartrees
Energy at 0K-191.053672
Energy at 298.15K-191.058849
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 HF_cp_opt/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' 4072 3658 7.97      
2 A' 4050 3639 324.67      
3 A' 3285 2952 70.63      
4 A' 3174 2851 72.38      
5 A' 1827 1642 113.22      
6 A' 1666 1497 2.04      
7 A' 1639 1473 14.15      
8 A' 1557 1399 64.12      
9 A' 1207 1085 8.30      
10 A' 1201 1079 129.47      
11 A' 236 212 274.49      
12 A' 153 137 27.51      
13 A' 71 64 41.87      
14 A" 4184 3759 84.74      
15 A" 3214 2887 114.84      
16 A" 1652 1485 0.32      
17 A" 1292 1161 3.93      
18 A" 680 611 202.31      
19 A" 207 186 6.84      
20 A" 98 88 4.77      
21 A" 64 58 53.72      

Unscaled Zero Point Vibrational Energy (zpe) 17763.1 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 15960.1 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_cp_opt/6-31G*
ABC
1.10489 0.12166 0.11361

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.415 0.000
O2 -0.950 0.457 0.000
O3 2.042 0.377 0.000
C4 -1.467 -0.838 0.000
H5 2.470 0.755 0.756
H6 2.470 0.755 -0.756
H7 -2.546 -0.761 0.000
H8 -1.166 -1.402 -0.882
H9 -1.166 -1.402 0.882

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.95062.04251.92902.60582.60582.80472.33162.3316
O20.95062.99291.39453.51533.51532.00822.06832.0683
O32.04252.99293.71330.94800.94804.72753.77303.7730
C41.92901.39453.71334.31414.31411.08241.08861.0886
H52.60583.51530.94804.31411.51285.29524.53454.2301
H62.60583.51530.94804.31411.51285.29524.23014.5345
H72.80472.00824.72751.08245.29525.29521.75841.7584
H82.33162.06833.77301.08864.53454.23011.75841.7638
H92.33162.06833.77301.08864.23014.53451.75841.7638

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 109.216 H1 O3 H5 116.370
H1 O3 H6 116.370 O2 H1 O3 178.509
O2 C4 H7 107.673 O2 C4 H8 112.221
O2 C4 H9 112.221 H5 O3 H6 105.861
H7 C4 H8 108.180 H7 C4 H9 108.180
H8 C4 H9 108.219
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF_cp_opt/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.869      
4 C 0.000      
5 H 0.435      
6 H 0.435      
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
  3.290 0.061 0.000 3.291
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.084 7.245 0.000
y 7.245 -19.098 0.000
z 0.000 0.000 -17.742
Traceless
 xyz
x 6.336 7.245 0.000
y 7.245 -4.185 0.000
z 0.000 0.000 -2.150
Polar
3z2-r2-4.301
x2-y27.014
xy7.245
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.478 0.124 0.000
y 0.124 0.645 0.000
z 0.000 0.000 0.994


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