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

using model chemistry: MP2/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 MP2/cc-pVTZ
 hartrees
Energy at 0K-191.846791
Energy at 298.15K-191.852337
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy80.648465
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/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 3936 3738 87.98      
2 A 3880 3684 48.07      
3 A 3743 3554 268.39      
4 A 3202 3040 11.26      
5 A 3149 2990 35.46      
6 A 3071 2916 44.68      
7 A 1678 1593 45.96      
8 A 1534 1457 4.03      
9 A 1523 1446 3.26      
10 A 1495 1419 2.70      
11 A 1378 1309 23.49      
12 A 1191 1131 0.44      
13 A 1094 1038 2.67      
14 A 1063 1009 123.04      
15 A 645 612 139.86      
16 A 348 330 81.05      
17 A 285 270 91.10      
18 A 196 186 7.00      
19 A 154 146 108.74      
20 A 87 83 9.20      
21 A 54 51 16.90      

Unscaled Zero Point Vibrational Energy (zpe) 16851.4 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 16000.4 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 MP2/cc-pVTZ
ABC
0.85382 0.15263 0.13486

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.135 0.315 0.095
O2 1.974 -0.166 0.108
O3 -0.714 0.721 -0.084
H4 2.359 0.033 -0.747
H5 -1.222 1.329 0.458
C6 -1.326 -0.565 -0.003
H7 -2.294 -0.579 -0.504
H8 -0.655 -1.255 -0.504
H9 -1.447 -0.892 1.029

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 H7 H8 H9
H10.96711.90191.51202.59182.61553.59342.45492.9990
O20.96712.83740.95863.54613.32594.33092.91053.6162
O31.90192.83743.21800.95991.42712.08832.02102.0926
H41.51200.95863.21803.99453.80654.69883.28654.3003
H52.59183.54610.95993.99451.95212.38972.81442.3036
C62.61553.32591.42713.80651.95211.08951.08451.0894
H73.59344.33092.08834.69882.38971.08951.77251.7787
H82.45492.91052.02103.28652.81441.08451.77251.7631
H92.99903.61622.09264.30032.30361.08941.77871.7631

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 103.470 H1 O3 H5 126.642
H1 O3 C6 102.631 O2 H1 O3 161.999
O3 C6 H7 111.459 O3 C6 H8 106.360
O3 C6 H9 111.820 H5 O3 C6 108.131
H7 C6 H8 109.240 H7 C6 H9 109.448
H8 C6 H9 108.399
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability