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

using model chemistry: MP2_cp_opt/6-311+G(3df,2pd)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2_cp_opt/6-311+G(3df,2pd)
 hartrees
Energy at 0K-191.852521
Energy at 298.15K-191.857866
Nuclear repulsion energy40.303976
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 MP2_cp_opt/6-311+G(3df,2pd)
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 3958 3760 110.18      
2 A 3903 3708 53.77      
3 A 3750 3563 332.71      
4 A 3200 3040 11.56      
5 A 3150 2993 28.70      
6 A 3069 2916 43.52      
7 A 1652 1569 45.30      
8 A 1534 1457 5.95      
9 A 1524 1448 4.16      
10 A 1498 1423 3.18      
11 A 1372 1303 22.41      
12 A 1194 1134 0.40      
13 A 1089 1035 0.68      
14 A 1063 1010 125.72      
15 A 612 582 99.55      
16 A 354 337 47.93      
17 A 300 285 149.12      
18 A 177 168 4.63      
19 A 116 110 115.76      
20 A 45 43 14.61      
21 A 39 37 17.53      

Unscaled Zero Point Vibrational Energy (zpe) 16799.2 cm-1
Scaled (by 0.95) Zero Point Vibrational Energy (zpe) 15959.2 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 MP2_cp_opt/6-311+G(3df,2pd)
ABC
0.90629 0.14174 0.12713

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2_cp_opt/6-311+G(3df,2pd)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.178 0.236 -0.016
O2 2.030 -0.206 0.095
O3 -0.704 0.703 -0.091
H4 2.593 0.185 -0.574
H5 -1.036 1.298 0.583
C6 -1.425 -0.524 -0.004
H7 -2.483 -0.377 -0.215
H8 -1.003 -1.183 -0.755
H9 -1.307 -0.989 0.974

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 H7 H8 H9
H10.96661.94061.52202.52772.71143.71742.70452.9421
O20.96662.88760.95763.45033.47114.52753.29793.5390
O31.94062.88763.37240.95891.42552.08482.02132.0881
H41.52200.95763.37243.96844.11975.12023.85174.3574
H52.52773.45030.95893.96841.95372.35312.81922.3363
C62.71143.47111.42554.11971.95371.08921.08451.0892
H73.71744.52752.08485.12022.35311.08921.77031.7805
H82.70453.29792.02133.85172.81921.08451.77031.7661
H92.94213.53902.08814.35742.33631.08921.78051.7661

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 104.558 H1 O3 H5 117.253
H1 O3 C6 106.310 O2 H1 O3 165.878
O3 C6 H7 111.301 O3 C6 H8 106.489
O3 C6 H9 111.573 H5 O3 C6 108.453
H7 C6 H8 109.056 H7 C6 H9 109.636
H8 C6 H9 108.679
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2_cp_opt/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.596      
4 H 0.000      
5 H 0.133      
6 C 0.422      
7 H 0.013      
8 H 0.015      
9 H 0.013      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.404 0.999 -0.129 2.606
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.444 2.365 -4.941
y 2.365 -18.943 1.642
z -4.941 1.642 -19.224
Traceless
 xyz
x 0.639 2.365 -4.941
y 2.365 -0.109 1.642
z -4.941 1.642 -0.530
Polar
3z2-r2-1.061
x2-y20.499
xy2.365
xz-4.941
yz1.642


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.881 0.186 -0.005
y 0.186 3.213 0.052
z -0.005 0.052 2.817


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000