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

using model chemistry: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-190.841823
Energy at 298.15K-190.848415
Counterpoise corrected energy-190.826280
CP Energy at 298.15K-190.831843
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy82.505199
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 PBEPBE/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 3398 3367 1.61      
2 A 3393 3362 22.51      
3 A 3075 3047 213.25      
4 A 3035 3007 21.75      
5 A 3007 2979 60.31      
6 A 2937 2911 78.99      
7 A 1701 1686 64.15      
8 A 1553 1539 3.60      
9 A 1527 1513 4.88      
10 A 1443 1430 4.20      
11 A 1335 1323 24.69      
12 A 1127 1117 8.42      
13 A 1053 1044 106.82      
14 A 970 961 261.04      
15 A 959 950 28.99      
16 A 418 414 106.73      
17 A 397 393 73.36      
18 A 305 302 67.45      
19 A 286 284 23.38      
20 A 250 247 21.00      
21 A 166 165 67.30      

Unscaled Zero Point Vibrational Energy (zpe) 16167.1 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 16019.9 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 PBEPBE/3-21G
ABC
0.73888 0.19304 0.16115

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.950 0.504 -0.188
O2 -1.764 -0.116 -0.114
O3 0.708 0.771 0.075
H4 -1.989 -0.060 0.867
H5 1.446 1.322 -0.322
C6 1.088 -0.661 0.002
H7 1.758 -0.955 0.831
H8 0.102 -1.149 0.080
H9 1.554 -0.933 -0.964

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 H7 H8 H9
H11.02591.70001.58402.53522.35523.24111.97742.9899
O21.02592.63291.00773.52332.90543.74182.14073.5212
O31.70002.63292.93071.00281.48312.15752.01312.1675
H41.58401.00772.93073.88813.25173.85262.48484.0825
H52.53523.52331.00283.88812.04112.57192.84142.3472
C62.35522.90541.48313.25172.04111.10611.10301.1067
H73.24113.74182.15753.85262.57191.10611.82941.8068
H81.97742.14072.01312.48482.84141.10301.82941.8017
H92.98993.52122.16754.08252.34721.10671.80681.8017

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 102.321 H1 O3 H5 137.951
H1 O3 C6 95.207 O2 H1 O3 149.006
O3 C6 H7 112.050 O3 C6 H8 101.216
O3 C6 H9 112.825 H5 O3 C6 108.846
H7 C6 H8 111.816 H7 C6 H9 109.471
H8 C6 H9 109.246
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.336      
2 O -0.651      
3 O -0.520      
4 H 0.301      
5 H 0.351      
6 C -0.436      
7 H 0.193      
8 H 0.233      
9 H 0.192      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.939 0.849 0.694 3.137
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.365 0.186 -4.555
y 0.186 -18.045 -1.327
z -4.555 -1.327 -18.506
Traceless
 xyz
x -1.090 0.186 -4.555
y 0.186 0.891 -1.327
z -4.555 -1.327 0.199
Polar
3z2-r20.398
x2-y2-1.321
xy0.186
xz-4.555
yz-1.327


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.928 0.048 -0.421
y 0.048 2.918 -0.147
z -0.421 -0.147 2.707


<r2> (average value of r2) Å2
<r2> 75.360
(<r2>)1/2 8.681