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

using model chemistry: CCSD(T)_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 CCSD(T)_cp/6-31G*
 hartrees
Energy at 0K-191.589307
Energy at 298.15K-191.581743
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 CCSD(T)/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 3826 3681        
2 A 3735 3593        
3 A 3683 3543        
4 A 3165 3045        
5 A 3118 3000        
6 A 3046 2930        
7 A 1774 1707        
8 A 1549 1490        
9 A 1542 1483        
10 A 1514 1457        
11 A 1411 1358        
12 A 1192 1147        
13 A 1094 1052        
14 A 1059 1019        
15 A 633 609        
16 A 484 465        
17 A 287 276        
18 A 197 190        
19 A 134 129        
20 A 93 89        
21 A 67 65        

Unscaled Zero Point Vibrational Energy (zpe) 16799.7 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 16163.0 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 CCSD(T)/6-31G*
ABC
0.80240 0.15462 0.13611

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.117 0.332 0.105
O2 -1.950 -0.124 -0.121
O3 0.794 0.756 0.133
H4 -2.400 -0.235 0.731
H5 0.866 1.190 -0.735
C6 1.282 -0.588 -0.017
H7 2.320 -0.598 -0.376
H8 1.248 -1.037 0.979
H9 0.645 -1.175 -0.693

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 H7 H8 H9
H10.97641.95761.53582.31842.57203.59352.86922.4523
O20.97642.89300.97033.16773.26674.30453.50342.8580
O31.95762.89303.39680.97361.43772.10322.03422.1055
H41.53580.97033.39683.85303.77354.86223.74323.4910
H52.31843.16770.97363.85301.96182.33242.83662.3752
C62.57203.26671.43773.77351.96181.09911.09401.0982
H73.59354.30452.10324.86222.33241.09911.78381.7998
H82.86923.50342.03423.74322.83661.09401.78381.7833
H92.45232.85802.10553.49102.37521.09821.79981.7833

picture of water methanol dimer state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at CCSD(T)/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.478      
2 O -0.924      
3 O -0.750      
4 H 0.423      
5 H 0.448      
6 C -0.192      
7 H 0.158      
8 H 0.181      
9 H 0.179      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.905 -0.229 0.285 1.940
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> 86.498
(<r2>)1/2 9.300