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

using model chemistry: HF/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 HF/6-311+G(3df,2pd)
 hartrees
Energy at 0K-191.155668
Energy at 298.15K-191.160672
Counterpoise corrected energy-191.155314
CP Energy at 298.15K-191.160254
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy78.150968
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/6-311+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' 4144 3755 35.42      
2 A' 4133 3744 297.36      
3 A' 3232 2928 54.84      
4 A' 3131 2837 75.72      
5 A' 1751 1586 97.95      
6 A' 1631 1478 4.19      
7 A' 1608 1457 6.50      
8 A' 1520 1377 45.18      
9 A' 1191 1079 16.07      
10 A' 1184 1072 118.99      
11 A' 206 187 223.57      
12 A' 134 121 16.00      
13 A' 64 58 39.66      
14 A" 4239 3840 113.17      
15 A" 3170 2872 82.48      
16 A" 1621 1469 2.50      
17 A" 1281 1161 2.66      
18 A" 621 563 150.78      
19 A" 181 164 5.89      
20 A" 87 78 11.01      
21 A" 61 55 38.13      

Unscaled Zero Point Vibrational Energy (zpe) 17594.5 cm-1
Scaled (by 0.906) Zero Point Vibrational Energy (zpe) 15940.6 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/6-311+G(3df,2pd)
ABC
1.12952 0.11768 0.11036

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.400 0.000
O2 -0.939 0.480 0.000
O3 2.094 0.307 0.000
C4 -1.528 -0.783 0.000
H5 2.517 0.679 0.754
H6 2.517 0.679 -0.754
H7 -2.600 -0.646 0.000
H8 -1.257 -1.357 -0.881
H9 -1.257 -1.357 0.881

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.94222.09651.93212.64242.64242.80262.33362.3336
O20.94223.03821.39323.54293.54292.00702.06242.0624
O32.09653.03823.78240.94070.94074.79023.84453.8445
C41.93211.39323.78244.36634.36631.08081.08631.0863
H52.64243.54290.94074.36631.50745.33944.58974.2904
H62.64243.54290.94074.36631.50745.33944.29044.5897
H72.80262.00704.79021.08085.33945.33941.75631.7563
H82.33362.06243.84451.08634.58974.29041.75631.7627
H92.33362.06243.84451.08634.29044.58971.75631.7627

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 110.142 H1 O3 H5 115.565
H1 O3 H6 115.565 O2 H1 O3 177.687
O2 C4 H7 107.763 O2 C4 H8 111.971
O2 C4 H9 111.971 H5 O3 H6 106.491
H7 C4 H8 108.276 H7 C4 H9 108.276
H8 C4 H9 108.456
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.215      
2 O -0.637      
3 O -0.244      
4 C 0.423      
5 H 0.119      
6 H 0.119      
7 H 0.003      
8 H 0.001      
9 H 0.001      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.887 -0.108 0.000 2.889
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.691 6.496 0.000
y 6.496 -20.187 0.000
z 0.000 0.000 -17.903
Traceless
 xyz
x 6.354 6.496 0.000
y 6.496 -4.890 0.000
z 0.000 0.000 -1.464
Polar
3z2-r2-2.928
x2-y27.496
xy6.496
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.217 0.282 0.000
y 0.282 3.880 0.000
z 0.000 0.000 3.728


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