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

using model chemistry: PM6

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM6
 hartrees
Energy at 0K 
Energy at 298.15K0.747394
Nuclear repulsion energy66.244914
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 PM6
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 1686 1791 37.29      
2 A 1410 1497 11.80      
3 A 1364 1450 47.56      
4 A 1337 1421 5.79      
5 A 1332 1416 0.59      
6 A 1260 1339 24.19      
7 A 1228 1304 0.45      
8 A 1167 1240 62.84      
9 A 1045 1110 28.79      
10 A 900 956 37.44      
11 A 873 927 21.21      
12 A 749 795 5.15      
13 A 684 727 51.61      
14 A 387 411 57.87      
15 A 366 388 39.57      
16 A 342 363 14.74      
17 A 316 335 26.60      
18 A 247 263 98.42      
19 A 104i 110i 15.90      
20 A 674i 716i 219.22      
21 A 716i 760i 530.15      

Unscaled Zero Point Vibrational Energy (zpe) 7599.0 cm-1
Scaled (by 1.0624) Zero Point Vibrational Energy (zpe) 8073.2 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 PM6
ABC
0.73065 0.12124 0.11616

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM6

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.156 -0.300 0.084
O2 0.733 -0.668 -0.013
O3 -2.070 0.218 0.014
C4 1.674 0.379 0.005
H5 -2.585 -0.218 0.682
H6 -2.412 -0.074 -0.824
H7 2.650 -0.086 -0.111
H8 1.512 1.078 -0.816
H9 1.648 0.923 0.950

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.96641.98391.95322.50322.44222.82112.34352.3458
O20.96642.93901.40753.41973.30102.00622.07342.0731
O31.98392.93903.74680.95010.95064.73123.77563.8987
C41.95321.40753.74684.35354.19321.08781.09081.0909
H52.50323.41970.95014.35351.52265.29694.55094.3931
H62.44223.30100.95064.19321.52265.11194.08914.5418
H72.82112.00624.73121.08785.29695.11191.77451.7743
H82.34352.07343.77561.09084.55094.08911.77451.7789
H92.34582.07313.89871.09094.39314.54181.77431.7789

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 109.316 H1 O3 H5 112.255
H1 O3 H6 107.358 O2 H1 O3 169.294
O2 C4 H7 106.312 O2 C4 H8 111.551
O2 C4 H9 111.521 H5 O3 H6 106.473
H7 C4 H8 109.075 H7 C4 H9 109.047
H8 C4 H9 109.246
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PM6 Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.350      
2 O -0.463      
3 O -0.676      
4 C -0.231      
5 H 0.393      
6 H 0.224      
7 H 0.160      
8 H 0.097      
9 H 0.146      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -4.337 3.011 5.165 7.386
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 17.658 12.075 -3.660
y 12.075 22.887 -1.756
z -3.660 -1.756 10.844


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