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

using model chemistry: HF_cp/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 HF_cp/6-31G*
 hartrees
Energy at 0K-191.053559
Energy at 298.15K-191.045384
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 HF/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' 4070 3657 36.39      
2 A' 4053 3642 311.63      
3 A' 3286 2952 69.81      
4 A' 3174 2852 72.22      
5 A' 1823 1638 109.47      
6 A' 1666 1497 2.06      
7 A' 1639 1473 14.16      
8 A' 1558 1400 64.22      
9 A' 1208 1086 10.87      
10 A' 1200 1078 126.48      
11 A' 267 240 282.69      
12 A' 162 146 13.96      
13 A' 62 55 52.09      
14 A" 4181 3756 89.74      
15 A" 3214 2888 113.62      
16 A" 1652 1485 0.35      
17 A" 1292 1161 3.99      
18 A" 684 614 190.50      
19 A" 207 186 0.03      
20 A" 90 81 10.55      
21 A" 66 59 66.81      

Unscaled Zero Point Vibrational Energy (zpe) 17776.7 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 15972.4 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 HF/6-31G*
ABC
1.14724 0.12221 0.11453

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.362 0.000
O2 -0.950 0.350 0.000
O3 2.003 0.565 0.000
C4 -1.394 -0.972 0.000
H5 2.272 1.069 0.757
H6 2.272 1.069 -0.757
H7 -2.477 -0.956 0.000
H8 -1.063 -1.517 -0.882
H9 -1.063 -1.517 0.882

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.95052.01351.92932.49752.49752.80502.33172.3317
O20.95052.96141.39483.38773.38772.00862.06832.0683
O32.01352.96143.72910.94830.94834.73093.80973.8097
C41.92931.39483.72914.26434.26431.08241.08851.0885
H52.49753.38770.94834.26431.51355.21784.52754.2224
H62.49753.38770.94834.26431.51355.21784.22244.5275
H72.80502.00864.73091.08245.21785.21781.75841.7584
H82.33172.06833.80971.08854.52754.22241.75841.7638
H92.33172.06833.80971.08854.22244.52751.75841.7638

picture of methanol water dimer state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.486      
2 O -0.778      
3 O -0.874      
4 C -0.156      
5 H 0.450      
6 H 0.450      
7 H 0.159      
8 H 0.131      
9 H 0.131      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.762 0.655 0.000 2.839
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 99.998
(<r2>)1/2 10.000