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

using model chemistry: wB97X-D/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 wB97X-D/3-21G*
 hartrees
Energy at 0K-191.019369
Energy at 298.15K-191.025856
HF Energy-191.019369
Nuclear repulsion energy82.513173
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 wB97X-D/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 3660 3469 19.76      
2 A 3617 3428 11.16      
3 A 3364 3188 272.43      
4 A 3185 3019 17.57      
5 A 3162 2997 15.00      
6 A 3078 2917 38.00      
7 A 1763 1671 57.16      
8 A 1603 1520 8.29      
9 A 1556 1474 5.14      
10 A 1497 1419 4.34      
11 A 1397 1324 35.72      
12 A 1176 1114 7.64      
13 A 1092 1035 38.60      
14 A 990 938 66.28      
15 A 855 810 262.37      
16 A 603 571 17.24      
17 A 319 302 336.47      
18 A 269 255 38.00      
19 A 264 250 105.16      
20 A 219 208 7.52      
21 A 145 138 9.85      

Unscaled Zero Point Vibrational Energy (zpe) 16906.8 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 16024.3 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 wB97X-D/3-21G*
ABC
0.73839 0.18752 0.15833

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.052 0.363 0.163
O2 -1.876 -0.107 -0.121
O3 0.769 0.773 0.143
H4 -2.312 -0.431 0.700
H5 0.732 1.212 -0.738
C6 1.237 -0.599 -0.028
H7 2.204 -0.654 -0.543
H8 1.362 -1.010 0.974
H9 0.499 -1.210 -0.561

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 H7 H8 H9
H10.99021.86671.58262.17192.48993.48362.89292.3245
O20.99022.79990.98372.98733.15274.13823.53522.6550
O31.86672.79993.35400.98501.45932.13692.05472.1215
H41.58260.98373.35403.74593.62624.68893.72903.1770
H52.17192.98730.98503.74592.00962.38522.87532.4403
C62.48993.15271.45933.62622.00961.09711.09071.0965
H73.48364.13822.13694.68892.38521.09711.77121.7939
H82.89293.53522.05473.72902.87531.09071.77121.7723
H92.32452.65502.12153.17702.44031.09651.79391.7723

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 106.600 H1 O3 H5 94.090
H1 O3 C6 96.172 O2 H1 O3 155.907
O3 C6 H7 112.653 O3 C6 H8 106.471
O3 C6 H9 111.426 H5 O3 C6 109.057
H7 C6 H8 108.108 H7 C6 H9 109.734
H8 C6 H9 108.252
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.352      
2 O -0.725      
3 O -0.567      
4 H 0.328      
5 H 0.371      
6 C -0.425      
7 H 0.203      
8 H 0.231      
9 H 0.231      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.023 -0.499 0.243 2.098
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.160 -0.187 -5.650
y -0.187 -17.970 -3.053
z -5.650 -3.053 -17.605
Traceless
 xyz
x -3.372 -0.187 -5.650
y -0.187 1.412 -3.053
z -5.650 -3.053 1.960
Polar
3z2-r23.920
x2-y2-3.190
xy-0.187
xz-5.650
yz-3.053


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.123 0.068 -0.329
y 0.068 2.642 -0.377
z -0.329 -0.377 2.709


<r2> (average value of r2) Å2
<r2> 76.311
(<r2>)1/2 8.736