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

using model chemistry: HF/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-191.160055
Energy at 298.15K-191.165028
Counterpoise corrected energy-191.159933
CP Energy at 298.15K-191.164892
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy78.036499
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/aug-cc-pVTZ
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' 4119 3749 22.45      
2 A' 4107 3739 297.54      
3 A' 3232 2942 55.03      
4 A' 3132 2852 76.63      
5 A' 1750 1593 98.44      
6 A' 1630 1484 4.19      
7 A' 1607 1463 6.60      
8 A' 1516 1380 42.25      
9 A' 1188 1082 9.41      
10 A' 1180 1074 125.24      
11 A' 196 179 220.01      
12 A' 128 117 16.31      
13 A' 63 57 35.13      
14 A" 4216 3838 110.84      
15 A" 3171 2887 82.62      
16 A" 1619 1474 2.44      
17 A" 1279 1165 2.67      
18 A" 605 551 144.59      
19 A" 179 163 7.52      
20 A" 86 78 14.40      
21 A" 60 55 28.79      

Unscaled Zero Point Vibrational Energy (zpe) 17530.7 cm-1
Scaled (by 0.9104) Zero Point Vibrational Energy (zpe) 15960.0 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 HF/aug-cc-pVTZ
ABC
1.11918 0.11733 0.10996

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.411 0.000
O2 -0.938 0.501 0.000
O3 2.100 0.274 0.000
C4 -1.540 -0.758 0.000
H5 2.553 0.609 0.755
H6 2.553 0.609 -0.755
H7 -2.611 -0.611 0.000
H8 -1.275 -1.335 -0.882
H9 -1.275 -1.335 0.882

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.94262.10471.93352.66912.66912.80412.33502.3350
O20.94263.04701.39503.57323.57322.00852.06412.0641
O32.10473.04703.78350.94150.94154.79373.84143.8414
C41.93351.39503.78354.38014.38011.08111.08661.0866
H52.66913.57320.94154.38011.50965.35924.59404.2945
H62.66913.57320.94154.38011.50965.35924.29454.5940
H72.80412.00854.79371.08115.35925.35921.75691.7569
H82.33502.06413.84141.08664.59404.29451.75691.7634
H92.33502.06413.84141.08664.29454.59401.75691.7634

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 110.098 H1 O3 H5 117.141
H1 O3 H6 117.141 O2 H1 O3 178.299
O2 C4 H7 107.741 O2 C4 H8 111.961
O2 C4 H9 111.961 H5 O3 H6 106.577
H7 C4 H8 108.288 H7 C4 H9 108.288
H8 C4 H9 108.475
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.303      
2 O -0.553      
3 O -0.415      
4 C -0.694      
5 H 0.200      
6 H 0.200      
7 H 0.335      
8 H 0.312      
9 H 0.312      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.958 -0.248 0.000 2.969
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.156 6.100 0.000
y 6.100 -20.579 0.000
z 0.000 0.000 -17.898
Traceless
 xyz
x 7.082 6.100 0.000
y 6.100 -5.552 0.000
z 0.000 0.000 -1.531
Polar
3z2-r2-3.061
x2-y28.423
xy6.100
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.396 0.284 0.000
y 0.284 4.039 0.000
z 0.000 0.000 3.890


<r2> (average value of r2) Å2
<r2> 103.795
(<r2>)1/2 10.188