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

using model chemistry: MP2_cp_opt/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 MP2_cp_opt/6-31+G**
 hartrees
Energy at 0K-191.635212
Energy at 298.15K-191.640559
Nuclear repulsion energy40.112968
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 MP2_cp_opt/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 3978 3742 124.94      
2 A 3895 3664 45.98      
3 A 3776 3552 269.54      
4 A 3263 3069 15.77      
5 A 3205 3015 37.99      
6 A 3119 2933 49.86      
7 A 1651 1553 68.52      
8 A 1560 1468 4.33      
9 A 1549 1457 2.69      
10 A 1524 1433 7.66      
11 A 1379 1297 23.66      
12 A 1200 1129 0.64      
13 A 1088 1023 12.90      
14 A 1061 998 130.44      
15 A 602 567 142.24      
16 A 364 342 76.68      
17 A 297 279 179.72      
18 A 169 159 3.75      
19 A 125 118 154.41      
20 A 47 44 20.78      
21 A 38 36 19.04      

Unscaled Zero Point Vibrational Energy (zpe) 16944.2 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 15937.7 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 MP2_cp_opt/6-31+G**
ABC
0.94847 0.13126 0.11939

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2_cp_opt/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.231 0.189 -0.012
O2 2.110 -0.206 0.099
O3 -0.698 0.679 -0.090
H4 2.649 0.153 -0.613
H5 -1.011 1.320 0.559
C6 -1.510 -0.502 -0.002
H7 -2.550 -0.282 -0.245
H8 -1.110 -1.196 -0.733
H9 -1.449 -0.953 0.988

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 H7 H8 H9
H10.97031.99211.54032.57552.82673.81712.81443.0801
O20.97032.95070.96233.50493.63364.67323.47043.7439
O31.99212.95073.42820.96481.43532.09152.02472.0949
H41.54030.96233.42824.01644.25405.22953.99544.5364
H52.57553.50490.96484.01641.97072.36232.83092.3544
C62.82673.63361.43534.25401.97071.09011.08501.0901
H73.81714.67322.09155.22952.36231.09011.77411.7841
H82.81443.47042.02473.99542.83091.08501.77411.7716
H93.08013.74392.09494.53642.35441.09011.78411.7716

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 105.700 H1 O3 H5 116.810
H1 O3 C6 110.064 O2 H1 O3 169.175
O3 C6 H7 111.086 O3 C6 H8 106.075
O3 C6 H9 111.370 H5 O3 C6 108.807
H7 C6 H8 109.306 H7 C6 H9 109.825
H8 C6 H9 109.079
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2_cp_opt/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.612      
4 H 0.000      
5 H 0.353      
6 C -0.094      
7 H 0.109      
8 H 0.135      
9 H 0.109      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.760 1.067 -0.323 2.976
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.726 2.633 -5.663
y 2.633 -18.929 1.772
z -5.663 1.772 -19.354
Traceless
 xyz
x 0.416 2.633 -5.663
y 2.633 0.111 1.772
z -5.663 1.772 -0.526
Polar
3z2-r2-1.053
x2-y20.203
xy2.633
xz-5.663
yz1.772


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.554 0.149 -0.002
y 0.149 2.765 0.049
z -0.002 0.049 2.487


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