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

using model chemistry: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-192.046188
Energy at 298.15K-192.052021
Nuclear repulsion energy81.374229
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 B1B95/6-31G*
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 3884 3687 62.95      
2 A 3819 3625 33.85      
3 A 3699 3511 207.29      
4 A 3180 3019 26.16      
5 A 3132 2973 38.01      
6 A 3060 2905 46.12      
7 A 1748 1659 63.87      
8 A 1544 1466 4.36      
9 A 1532 1455 3.35      
10 A 1506 1429 2.86      
11 A 1399 1328 33.23      
12 A 1196 1136 0.83      
13 A 1106 1050 6.30      
14 A 1079 1024 121.73      
15 A 647 614 180.99      
16 A 517 491 21.35      
17 A 280 266 220.50      
18 A 196 186 6.21      
19 A 161 153 69.26      
20 A 127 121 87.35      
21 A 98 93 32.73      

Unscaled Zero Point Vibrational Energy (zpe) 16954.0 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 16094.4 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 B1B95/6-31G*
ABC
0.80935 0.16164 0.14166

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.102 0.360 0.170
O2 -1.908 -0.097 -0.120
O3 0.798 0.751 0.140
H4 -2.311 -0.408 0.698
H5 0.776 1.163 -0.732
C6 1.240 -0.587 -0.028
H7 2.205 -0.635 -0.545
H8 1.369 -1.000 0.973
H9 0.500 -1.190 -0.563

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 H7 H8 H9
H10.97161.94031.52622.23282.53433.52612.93232.3468
O20.97162.84850.96303.02813.18804.16963.57072.6819
O31.94032.84853.36450.96521.41902.08972.02092.0857
H41.52620.96303.36453.74703.62884.68853.73693.1787
H52.23283.02810.96523.74701.94292.30412.81742.3751
C62.53433.18801.41903.62881.94291.09511.09011.0944
H73.52614.16962.08974.68852.30411.09511.77061.7923
H82.93233.57072.02093.73692.81741.09011.77061.7748
H92.34682.68192.08573.17872.37511.09441.79231.7748

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 104.168 H1 O3 H5 94.426
H1 O3 C6 96.718 O2 H1 O3 154.586
O3 C6 H7 111.800 O3 C6 H8 106.571
O3 C6 H9 111.511 H5 O3 C6 107.635
H7 C6 H8 108.250 H7 C6 H9 109.886
H8 C6 H9 108.670
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.418      
2 O -0.845      
3 O -0.629      
4 H 0.390      
5 H 0.420      
6 C -0.271      
7 H 0.158      
8 H 0.180      
9 H 0.180      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.625 -0.416 0.309 1.706
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.828 -0.187 -5.418
y -0.187 -18.720 -2.800
z -5.418 -2.800 -17.765
Traceless
 xyz
x -2.585 -0.187 -5.418
y -0.187 0.576 -2.800
z -5.418 -2.800 2.008
Polar
3z2-r24.017
x2-y2-2.108
xy-0.187
xz-5.418
yz-2.800


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.573 0.051 -0.200
y 0.051 2.924 -0.237
z -0.200 -0.237 3.041


<r2> (average value of r2) Å2
<r2> 83.551
(<r2>)1/2 9.141