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

using model chemistry: CCSD(T)/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)/6-31G*
 hartrees
Energy at 0K-191.594317
Energy at 298.15K-191.599964
HF Energy-191.051609
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy80.279244
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
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 104.163 H1 O3 H5 98.977
H1 O3 C6 97.308 O2 H1 O3 159.626
O3 C6 H7 111.305 O3 C6 H8 106.133
O3 C6 H9 111.552 H5 O3 C6 107.327
H7 C6 H8 108.852 H7 C6 H9 109.988
H8 C6 H9 108.879
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
Primitive
 xyz
x -20.505 -1.116 -6.101
y -1.116 -19.173 -2.691
z -6.101 -2.691 -17.809
Traceless
 xyz
x -2.014 -1.116 -6.101
y -1.116 -0.015 -2.691
z -6.101 -2.691 2.030
Polar
3z2-r24.059
x2-y2-1.333
xy-1.116
xz-6.101
yz-2.691


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