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All results from a given calculation for CH3OHH2O (methanol water dimer)

using model chemistry: B3LYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B3LYP/6-31G(2df,p)
 hartrees
Energy at 0K-192.168142
Energy at 298.15K-192.173414
HF Energy-192.168142
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy78.901061
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 B3LYP/6-31G(2df,p)
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' 3797 3664 8.17      
2 A' 3689 3560 434.07      
3 A' 3085 2977 50.16      
4 A' 2963 2860 74.16      
5 A' 1660 1602 72.86      
6 A' 1518 1465 2.19      
7 A' 1489 1437 5.56      
8 A' 1447 1396 37.61      
9 A' 1125 1085 2.49      
10 A' 1086 1048 98.74      
11 A' 323 312 227.92      
12 A' 189 182 2.90      
13 A' 64 62 32.70      
14 A" 3896 3759 54.97      
15 A" 3000 2895 86.79      
16 A" 1496 1443 0.66      
17 A" 1180 1139 1.14      
18 A" 703 678 91.17      
19 A" 211 204 10.43      
20 A" 96 93 29.66      
21 A" 42 41 32.31      

Unscaled Zero Point Vibrational Energy (zpe) 16529.2 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 15950.7 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 B3LYP/6-31G(2df,p)
ABC
1.12901 0.12808 0.11954

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.346 0.000
O2 -0.956 0.190 0.000
O3 1.834 0.895 0.000
C4 -1.167 -1.203 0.000
H5 1.863 1.486 0.761
H6 1.863 1.486 -0.761
H7 -2.248 -1.376 0.000
H8 -0.749 -1.702 -0.890
H9 -0.749 -1.702 0.890

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.96921.91431.93972.31252.31252.83192.35522.3552
O20.96922.87821.40873.19503.19502.02972.10042.1004
O31.91432.87823.66170.96350.96354.67123.76923.7692
C41.93971.40873.66174.12174.12171.09491.10201.1020
H52.31253.19500.96354.12171.52175.06644.43924.1229
H62.31253.19500.96354.12171.52175.06644.12294.4392
H72.83192.02974.67121.09495.06645.06641.77321.7732
H82.35522.10043.76921.10204.43924.12291.77321.7794
H92.35522.10043.76921.10204.12294.43921.77321.7794

picture of methanol water dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 C4 107.892 H1 O3 H5 101.806
H1 O3 H6 101.806 O2 H1 O3 172.644
O2 C4 H7 107.668 O2 C4 H8 112.992
O2 C4 H9 112.992 H5 O3 H6 104.304
H7 C4 H8 107.632 H7 C4 H9 107.632
H8 C4 H9 107.672
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability