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

using model chemistry: PBEPBEultrafine_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 PBEPBEultrafine_cp_opt/6-31G*
 hartrees
Energy at 0K-191.902133
Energy at 298.15K-191.907550
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 PBEPBEultrafine_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 3748 3695 33.89      
2 A 3628 3576 3.72      
3 A 3458 3409 441.84      
4 A 3037 2994 58.10      
5 A 2925 2883 108.43      
6 A 2892 2851 94.67      
7 A 1679 1655 70.11      
8 A 1501 1480 1.38      
9 A 1474 1453 0.61      
10 A 1465 1444 9.16      
11 A 1437 1417 54.07      
12 A 1150 1133 0.30      
13 A 1105 1089 5.17      
14 A 1075 1060 107.16      
15 A 762 751 141.29      
16 A 314 310 244.57      
17 A 240 236 0.61      
18 A 198 195 8.43      
19 A 108 107 0.17      
20 A 86 85 33.23      
21 A 66 65 73.80      

Unscaled Zero Point Vibrational Energy (zpe) 16174.7 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 15943.4 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 PBEPBEultrafine_cp_opt/6-31G*
ABC
1.10034 0.12867 0.11980

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.198 0.298 0.001
O2 -0.708 0.694 -0.000
O3 2.007 -0.238 0.000
C4 -1.626 -0.382 0.000
H5 2.444 0.183 0.767
H6 2.443 0.183 -0.767
H7 -2.641 0.050 -0.001
H8 -1.541 -1.036 -0.897
H9 -1.542 -1.036 0.897

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.98841.88721.94642.37572.37552.84992.36812.3682
O20.98842.87061.41483.28343.28272.03792.11952.1195
O31.88722.87063.63610.97750.97754.65753.74573.7467
C41.94641.41483.63614.17954.17881.10371.11311.1131
H52.37573.28340.97754.17951.53435.14434.48664.1696
H62.37553.28270.97754.17881.53435.14324.16794.4870
H72.84992.03794.65751.10375.14435.14321.78731.7873
H82.36812.11953.74571.11314.48664.16791.78731.7941
H92.36822.11953.74671.11314.16964.48701.78731.7941

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 106.830 H1 O3 H5 107.790
H1 O3 H6 107.776 O2 H1 O3 172.858
O2 C4 H7 107.388 O2 C4 H8 113.417
O2 C4 H9 113.418 H5 O3 H6 103.406
H7 C4 H8 107.461 H7 C4 H9 107.460
H8 C4 H9 107.391
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine_cp_opt/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.745      
4 C 0.000      
5 H 0.371      
6 H 0.373      
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
  3.053 -0.157 0.000 3.057
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -0.393 3.384 -0.001
y 3.384 -7.082 0.000
z -0.001 0.000 -4.321
Traceless
 xyz
x 5.308 3.384 -0.001
y 3.384 -4.724 0.000
z -0.001 0.000 -0.584
Polar
3z2-r2-1.168
x2-y26.688
xy3.384
xz-0.001
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.535 -0.214 -0.111
y -0.214 0.847 0.093
z -0.111 0.093 1.210


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