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All results from a given calculation for CH3OHH2O (methanol water 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-190.327134
Energy at 298.15K-190.332507
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/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' 3539 3378 2.72      
2 A' 3432 3276 306.74      
3 A' 3154 3010 58.15      
4 A' 3024 2886 57.73      
5 A' 1734 1655 54.32      
6 A' 1628 1554 2.27      
7 A' 1563 1492 5.29      
8 A' 1498 1430 65.14      
9 A' 1141 1089 36.95      
10 A' 1016 970 55.23      
11 A' 236 225 276.76      
12 A' 198 189 38.62      
13 A' 97 93 37.70      
14 A" 3695 3526 6.33      
15 A" 3056 2917 102.33      
16 A" 1608 1534 0.44      
17 A" 1187 1133 0.50      
18 A" 793 757 237.40      
19 A" 228 218 19.53      
20 A" 125 119 9.86      
21 A" 56 53 24.75      

Unscaled Zero Point Vibrational Energy (zpe) 16503.3 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 15752.4 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 MP2_cp_opt/3-21G
ABC
0.99918 0.12977 0.11948

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.470 0.000
O2 -0.992 0.359 0.000
O3 1.866 0.681 0.000
C4 -1.267 -1.075 0.000
H5 2.357 1.014 0.789
H6 2.357 1.014 -0.789
H7 -2.354 -1.182 0.000
H8 -0.875 -1.594 -0.888
H9 -0.875 -1.594 0.888

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.99791.87771.99792.54442.54442.87572.41102.4110
O20.99792.87561.46003.50233.50232.05662.14842.1484
O31.87772.87563.59130.98730.98734.61273.67083.6708
C41.99791.46003.59134.25664.25661.09241.10061.1006
H52.54443.50230.98734.25661.57815.25724.47864.1540
H62.54443.50230.98734.25661.57815.25724.15404.4786
H72.87572.05664.61271.09245.25725.25721.77381.7738
H82.41102.14843.67081.10064.47864.15401.77381.7759
H92.41102.14843.67081.10064.15404.47861.77381.7759

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 107.250 H1 O3 H5 122.165
H1 O3 H6 122.165 O2 H1 O3 179.929
O2 C4 H7 106.472 O2 C4 H8 113.321
O2 C4 H9 113.321 H5 O3 H6 106.111
H7 C4 H8 107.962 H7 C4 H9 107.962
H8 C4 H9 107.563
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 -0.723      
4 C 0.000      
5 H 0.362      
6 H 0.362      
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
  4.328 0.090 0.000 4.329
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.681 8.071 0.000
y 8.071 -17.202 0.000
z 0.000 0.000 -17.612
Traceless
 xyz
x 5.726 8.071 0.000
y 8.071 -2.555 0.000
z 0.000 0.000 -3.170
Polar
3z2-r2-6.341
x2-y25.520
xy8.071
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.121 0.025 0.000
y 0.025 0.591 0.000
z 0.000 0.000 0.996


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