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

using model chemistry: TPSSh/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 TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-192.161657
Energy at 298.15K-192.167001
HF Energy-192.161657
Nuclear repulsion energy78.928718
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 TPSSh/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' 3764 3633 7.96      
2 A' 3628 3501 443.11      
3 A' 3088 2980 55.12      
4 A' 2959 2855 78.17      
5 A' 1673 1615 69.53      
6 A' 1528 1475 1.41      
7 A' 1492 1440 7.23      
8 A' 1452 1401 36.05      
9 A' 1123 1084 2.69      
10 A' 1079 1041 97.63      
11 A' 339 327 233.51      
12 A' 191 185 1.67      
13 A' 69 67 33.56      
14 A" 3865 3730 49.33      
15 A" 2997 2892 95.50      
16 A" 1509 1456 0.35      
17 A" 1178 1137 1.04      
18 A" 718 693 85.06      
19 A" 222 214 13.28      
20 A" 103 99 28.93      
21 A" 47 45 33.16      

Unscaled Zero Point Vibrational Energy (zpe) 16511.9 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 15934.0 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 TPSSh/6-31G(2df,p)
ABC
1.13311 0.12862 0.12006

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.442 0.000
O2 -0.968 0.421 0.000
O3 1.984 0.469 0.000
C4 -1.371 -0.930 0.000
H5 2.304 0.963 0.760
H6 2.304 0.963 -0.760
H7 -2.465 -0.940 0.000
H8 -1.026 -1.484 -0.889
H9 -1.026 -1.484 0.889

Atom - Atom Distances (Å)
  H1 O2 O3 C4 H5 H6 H7 H8 H9
H10.96791.98441.93932.48162.48162.82592.35612.3561
O20.96792.95221.40983.40243.40242.02342.10262.1026
O31.98442.95223.63480.96140.96144.66693.69663.6966
C41.93931.40983.63484.20304.20301.09431.10221.1022
H52.48163.40240.96144.20301.52045.19074.44924.1345
H62.48163.40240.96144.20301.52045.19074.13454.4492
H72.82592.02344.66691.09435.19075.19071.77641.7764
H82.35612.10263.69661.10224.44924.13451.77641.7770
H92.35612.10263.69661.10224.13454.44921.77641.7770

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 107.857 H1 O3 H5 109.857
H1 O3 H6 109.857 O2 H1 O3 179.533
O2 C4 H7 107.137 O2 C4 H8 113.088
O2 C4 H9 113.088 H5 O3 H6 104.499
H7 C4 H8 107.938 H7 C4 H9 107.938
H8 C4 H9 107.432
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability