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

using model chemistry: HF/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 HF/3-21G
 hartrees
Energy at 0K-190.001976
Energy at 298.15K-190.008185
Counterpoise corrected energy-189.994056
CP Energy at 298.15K-189.999682
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy81.937248
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/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 3908 3539 54.97      
2 A 3898 3530 24.72      
3 A 3738 3385 227.36      
4 A 3340 3024 3.43      
5 A 3252 2945 64.85      
6 A 3200 2898 41.43      
7 A 1843 1669 96.39      
8 A 1699 1539 4.13      
9 A 1692 1532 3.42      
10 A 1623 1470 1.38      
11 A 1467 1329 28.54      
12 A 1260 1141 1.57      
13 A 1151 1042 98.40      
14 A 1088 986 85.44      
15 A 826 748 304.54      
16 A 396 358 177.69      
17 A 337 306 90.88      
18 A 253 229 19.67      
19 A 237 215 128.49      
20 A 164 149 27.47      
21 A 120 109 63.13      

Unscaled Zero Point Vibrational Energy (zpe) 17746.7 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 16071.4 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/3-21G
ABC
0.79819 0.17310 0.14823

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.062 0.421 -0.156
O2 -1.855 -0.141 -0.102
O3 0.706 0.743 0.042
H4 -2.240 -0.023 0.776
H5 1.392 1.385 -0.175
C6 1.201 -0.620 0.007
H7 1.877 -0.815 0.830
H8 0.319 -1.229 0.096
H9 1.697 -0.841 -0.930

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 H7 H8 H9
H10.97291.80811.56622.63672.49673.33792.16693.1313
O20.97292.71260.96603.58803.09493.90522.43883.7134
O31.80812.71263.13100.96431.45122.10282.01132.1065
H41.56620.96603.13104.00983.57594.19302.90924.3678
H52.63673.58800.96434.00982.02282.46732.83942.3703
C62.49673.09491.45123.57592.02281.08271.07591.0831
H73.33793.90522.10284.19302.46731.08271.77191.7695
H82.16692.43882.01132.90922.83941.07591.77191.7618
H93.13133.71342.10654.36782.37031.08311.76951.7618

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 107.758 H1 O3 H5 142.142
H1 O3 C6 99.412 O2 H1 O3 153.280
O3 C6 H7 111.334 O3 C6 H8 104.496
O3 C6 H9 111.619 H5 O3 C6 112.167
H7 C6 H8 110.342 H7 C6 H9 109.568
H8 C6 H9 109.375
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.416      
2 O -0.792      
3 O -0.697      
4 H 0.349      
5 H 0.393      
6 C -0.299      
7 H 0.188      
8 H 0.253      
9 H 0.189      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.319 0.820 1.153 3.608
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.243 -0.412 -4.764
y -0.412 -17.375 -0.933
z -4.764 -0.933 -18.758
Traceless
 xyz
x -0.176 -0.412 -4.764
y -0.412 1.125 -0.933
z -4.764 -0.933 -0.949
Polar
3z2-r2-1.898
x2-y2-0.867
xy-0.412
xz-4.764
yz-0.933


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.980 0.232 -0.371
y 0.232 2.540 -0.045
z -0.371 -0.045 2.346


<r2> (average value of r2) Å2
<r2> 80.251
(<r2>)1/2 8.958