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

using model chemistry: PBEPBE/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 PBEPBE/6-31+G**
 hartrees
Energy at 0K-191.948891
Energy at 298.15K-191.954211
Counterpoise corrected energy-191.947376
CP Energy at 298.15K-191.952533
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy78.325895
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 PBEPBE/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 3830 3786 76.38      
2 A 3710 3668 8.74      
3 A 3556 3516 478.71      
4 A 3049 3014 41.85      
5 A 2960 2926 77.65      
6 A 2912 2879 94.52      
7 A 1585 1567 84.53      
8 A 1464 1447 3.07      
9 A 1448 1431 1.88      
10 A 1432 1416 10.08      
11 A 1379 1363 37.68      
12 A 1135 1122 0.01      
13 A 1084 1071 7.63      
14 A 1046 1034 114.42      
15 A 732 723 153.66      
16 A 294 291 235.33      
17 A 226 224 0.07      
18 A 182 180 7.60      
19 A 95 94 9.79      
20 A 81 80 32.17      
21 A 75 74 57.71      

Unscaled Zero Point Vibrational Energy (zpe) 16137.1 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 15953.1 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 PBEPBE/6-31+G**
ABC
1.10004 0.12772 0.11902

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.197 0.328 0.000
O2 -0.714 0.696 0.000
O3 2.008 -0.222 -0.000
C4 -1.635 -0.390 -0.000
H5 2.489 0.120 0.774
H6 2.489 0.120 -0.774
H7 -2.648 0.043 -0.000
H8 -1.536 -1.032 -0.899
H9 -1.536 -1.032 0.899

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.98271.89211.96782.42752.42752.85952.37962.3796
O20.98272.87221.42383.34483.34472.04132.11432.1143
O31.89212.87223.64640.97350.97354.66323.74453.7447
C41.96781.42383.64644.22654.22641.10171.10921.1092
H52.42753.34480.97354.22651.54835.19534.50834.1883
H62.42753.34470.97354.22641.54835.19524.18824.5084
H72.85952.04134.66321.10175.19535.19521.78901.7890
H82.37962.11433.74451.10924.50834.18821.78901.7979
H92.37962.11433.74471.10924.18834.50841.78901.7979

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 108.314 H1 O3 H5 111.753
H1 O3 H6 111.749 O2 H1 O3 174.910
O2 C4 H7 107.168 O2 C4 H8 112.576
O2 C4 H9 112.576 H5 O3 H6 105.349
H7 C4 H8 108.027 H7 C4 H9 108.027
H8 C4 H9 108.277
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.408      
2 O -0.537      
3 O -0.756      
4 C -0.303      
5 H 0.376      
6 H 0.376      
7 H 0.158      
8 H 0.139      
9 H 0.139      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.933 -0.621 0.000 2.998
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.003 4.640 -0.001
y 4.640 -23.684 -0.001
z -0.001 -0.001 -18.674
Traceless
 xyz
x 10.176 4.640 -0.001
y 4.640 -8.846 -0.001
z -0.001 -0.001 -1.330
Polar
3z2-r2-2.661
x2-y212.681
xy4.640
xz-0.001
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.797 0.137 0.000
y 0.137 3.965 0.000
z 0.000 0.000 3.851


<r2> (average value of r2) Å2
<r2> 97.892
(<r2>)1/2 9.894