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

using model chemistry: MP2_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 MP2_cp_opt/6-31G*
 hartrees
Energy at 0K-191.551693
Energy at 298.15K-191.556932
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 MP2_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' 3775 3560 5.84      
2 A' 3706 3495 332.85      
3 A' 3202 3020 44.99      
4 A' 3062 2887 61.76      
5 A' 1735 1636 92.74      
6 A' 1581 1491 2.07      
7 A' 1540 1452 8.87      
8 A' 1481 1396 51.12      
9 A' 1145 1080 13.35      
10 A' 1110 1046 100.19      
11 A' 255 240 258.37      
12 A' 169 159 23.04      
13 A' 74 70 38.20      
14 A" 3909 3686 62.10      
15 A" 3123 2945 80.36      
16 A" 1565 1476 0.78      
17 A" 1207 1138 0.90      
18 A" 711 671 181.14      
19 A" 216 204 2.78      
20 A" 103 97 1.80      
21 A" 65 62 65.48      

Unscaled Zero Point Vibrational Energy (zpe) 16866.6 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 15905.2 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 MP2_cp_opt/6-31G*
ABC
1.05752 0.12445 0.11559

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.409 0.000
O2 -0.976 0.393 0.000
O3 1.980 0.533 0.000
C4 -1.372 -0.969 0.000
H5 2.349 0.999 0.766
H6 2.349 0.999 -0.766
H7 -2.463 -0.984 0.000
H8 -1.020 -1.509 -0.890
H9 -1.020 -1.509 0.890

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.97601.98421.94422.54022.54022.82922.34742.3474
O20.97602.95951.41843.46533.46532.02632.10022.1002
O31.98422.95953.67310.96960.96964.69493.73703.7370
C41.94421.41843.67314.27814.27811.09141.09851.0985
H52.54023.46530.96964.27811.53265.26034.51494.2020
H62.54023.46530.96964.27811.53265.26034.20204.5149
H72.82922.02634.69491.09145.26035.26031.77451.7745
H82.34742.10023.73701.09854.51494.20201.77451.7798
H92.34742.10023.73701.09854.20204.51491.77451.7798

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 107.128 H1 O3 H5 114.178
H1 O3 H6 114.178 O2 H1 O3 177.332
O2 C4 H7 106.958 O2 C4 H8 112.500
O2 C4 H9 112.500 H5 O3 H6 104.434
H7 C4 H8 108.255 H7 C4 H9 108.255
H8 C4 H9 108.212
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2_cp_opt/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.865      
4 C 0.000      
5 H 0.432      
6 H 0.432      
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
  3.228 0.435 0.000 3.257
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.068 8.079 0.000
y 8.079 -17.529 0.000
z 0.000 0.000 -17.812
Traceless
 xyz
x 3.602 8.079 0.000
y 8.079 -1.589 0.000
z 0.000 0.000 -2.013
Polar
3z2-r2-4.026
x2-y23.461
xy8.079
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.421 0.019 0.000
y 0.019 0.774 0.000
z 0.000 0.000 1.054


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