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

using model chemistry: MP2_cp_opt/3-21G

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/3-21G
 hartrees
Energy at 0K-190.325776
Energy at 298.15K-190.331229
Nuclear repulsion energy39.302601
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/3-21G
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 3634 3469 51.58      
2 A 3545 3384 3.73      
3 A 3469 3311 150.11      
4 A 3186 3041 22.30      
5 A 3117 2975 60.35      
6 A 3064 2925 33.97      
7 A 1764 1683 66.75      
8 A 1621 1547 3.11      
9 A 1605 1532 2.89      
10 A 1554 1483 5.50      
11 A 1420 1355 24.06      
12 A 1183 1129 0.32      
13 A 1105 1054 29.95      
14 A 998 952 80.08      
15 A 636 607 195.15      
16 A 402 384 153.80      
17 A 335 319 110.06      
18 A 181 172 4.52      
19 A 93 89 109.04      
20 A 64 61 20.85      
21 A 42 40 21.18      

Unscaled Zero Point Vibrational Energy (zpe) 16507.4 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 15756.3 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/3-21G
ABC
1.06179 0.12145 0.11254

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2_cp_opt/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.242 0.066 0.046
O2 2.193 -0.215 0.102
O3 -0.616 0.616 -0.062
H4 2.621 0.157 -0.708
H5 -0.981 1.413 0.400
C6 -1.641 -0.442 -0.006
H7 -2.559 -0.160 -0.535
H8 -1.199 -1.305 -0.506
H9 -1.893 -0.724 1.023

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 H7 H8 H9
H10.99371.94051.57412.62262.92783.85212.85353.3774
O20.99372.93420.98793.57973.84254.79543.61434.2198
O31.94052.93423.33230.99031.47452.14562.05612.1456
H41.57410.98793.33233.97184.36045.19274.09474.9139
H52.62263.57970.99033.97182.01042.41642.87292.4052
C62.92783.84251.47454.36042.01041.09671.09051.0966
H73.85214.79542.14565.19272.41641.09671.77851.7859
H82.85353.61432.05614.09472.87291.09051.77851.7769
H93.37744.21982.14564.91392.40521.09661.78591.7769

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 105.184 H1 O3 H5 123.690
H1 O3 C6 117.392 O2 H1 O3 179.999
O3 C6 H7 112.284 O3 C6 H8 105.594
O3 C6 H9 112.300 H5 O3 C6 107.678
H7 C6 H8 108.807 H7 C6 H9 109.030
H8 C6 H9 108.673
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2_cp_opt/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.651      
4 H 0.000      
5 H 0.362      
6 C -0.301      
7 H 0.179      
8 H 0.220      
9 H 0.190      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -3.945 1.356 -0.753 4.239
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -9.782 -0.720 -0.804
y -0.720 -10.446 1.477
z -0.804 1.477 -13.151
Traceless
 xyz
x 2.017 -0.720 -0.804
y -0.720 1.020 1.477
z -0.804 1.477 -3.037
Polar
3z2-r2-6.073
x2-y20.664
xy-0.720
xz-0.804
yz1.477


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.004 0.121 -0.071
y 0.121 2.416 0.202
z -0.071 0.202 1.846


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