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

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G*
 hartrees
Energy at 0K-191.917246
Energy at 298.15K-191.923049
HF Energy-191.917246
Nuclear repulsion energy81.468542
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 PBE1PBE/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 3883 3690 58.41      
2 A 3816 3627 35.68      
3 A 3670 3487 269.89      
4 A 3176 3018 24.22      
5 A 3127 2972 36.58      
6 A 3055 2903 46.38      
7 A 1754 1666 62.43      
8 A 1539 1462 4.81      
9 A 1528 1452 4.28      
10 A 1503 1428 2.55      
11 A 1402 1332 33.63      
12 A 1191 1132 0.70      
13 A 1107 1052 6.73      
14 A 1081 1027 123.16      
15 A 666 633 168.56      
16 A 532 505 17.75      
17 A 292 277 237.24      
18 A 209 198 9.88      
19 A 140 133 116.91      
20 A 106 101 16.60      
21 A 91 86 43.20      

Unscaled Zero Point Vibrational Energy (zpe) 16932.3 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 16090.8 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 PBE1PBE/6-31G*
ABC
0.82262 0.16216 0.14249

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.082 0.333 0.158
O2 -1.903 -0.111 -0.121
O3 0.763 0.747 0.140
H4 -2.310 -0.392 0.706
H5 0.749 1.166 -0.730
C6 1.263 -0.571 -0.027
H7 2.254 -0.574 -0.498
H8 1.360 -0.997 0.975
H9 0.573 -1.196 -0.607

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 H7 H8 H9
H10.97441.89071.52862.19872.52013.51872.89802.3797
O20.97442.81280.96413.00593.20084.19983.55402.7469
O31.89072.81283.32620.96661.41992.09182.02352.0904
H41.52860.96413.32623.72193.65214.72413.72903.2688
H52.19873.00590.96663.72191.94422.31252.82172.3721
C62.52013.20081.41993.65211.94421.09761.09251.0969
H73.51874.19982.09184.72412.31251.09761.77471.7957
H82.89803.55402.02353.72902.82171.09251.77471.7779
H92.37972.74692.09043.26882.37211.09691.79571.7779

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 104.106 H1 O3 H5 95.108
H1 O3 C6 98.141 O2 H1 O3 156.847
O3 C6 H7 111.747 O3 C6 H8 106.577
O3 C6 H9 111.675 H5 O3 C6 107.588
H7 C6 H8 108.265 H7 C6 H9 109.823
H8 C6 H9 108.597
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.421      
2 O -0.856      
3 O -0.628      
4 H 0.392      
5 H 0.424      
6 C -0.301      
7 H 0.168      
8 H 0.190      
9 H 0.188      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.792 -0.347 0.310 1.852
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.838 -0.246 -5.383
y -0.246 -18.808 -2.807
z -5.383 -2.807 -17.798
Traceless
 xyz
x -2.535 -0.246 -5.383
y -0.246 0.510 -2.807
z -5.383 -2.807 2.025
Polar
3z2-r24.049
x2-y2-2.030
xy-0.246
xz-5.383
yz-2.807


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.614 0.053 -0.206
y 0.053 2.905 -0.231
z -0.206 -0.231 3.047


<r2> (average value of r2) Å2
<r2> 83.292
(<r2>)1/2 9.126