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All results from a given calculation for CH3COOH (Acetic acid)

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 CS 1A'
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-229.106997
Energy at 298.15K-229.111766
HF Energy-229.106997
Nuclear repulsion energy120.855757
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' 3718 3588 39.25      
2 A' 3174 3063 7.35      
3 A' 3055 2948 2.93      
4 A' 1834 1769 269.11      
5 A' 1483 1431 13.07      
6 A' 1407 1358 48.68      
7 A' 1345 1298 24.87      
8 A' 1203 1161 187.19      
9 A' 992 957 64.87      
10 A' 856 826 2.58      
11 A' 570 550 40.31      
12 A' 403 389 3.66      
13 A" 3122 3013 5.94      
14 A" 1488 1436 6.62      
15 A" 1063 1026 6.32      
16 A" 682 658 91.10      
17 A" 541 522 16.24      
18 A" 66 64 0.34      

Unscaled Zero Point Vibrational Energy (zpe) 13500.4 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 13027.9 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 TPSSh/6-31G(2df,p)
ABC
0.37650 0.31459 0.17702

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)
C1 0.983 -0.998 0.000
C2 0.000 0.143 0.000
O3 0.311 1.318 0.000
H4 1.978 -0.561 0.000
H5 0.849 -1.631 0.883
H6 0.849 -1.631 -0.883
O7 -1.284 -0.270 0.000
H8 -1.790 0.557 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50642.41161.08661.09491.09492.38163.1793
C21.50641.21532.09992.15592.15591.34901.8369
O32.41161.21532.51213.12513.12512.25072.2342
H41.08662.09992.51211.78911.78913.27543.9303
H51.09492.15593.12511.78911.76612.67993.5396
H61.09492.15593.12511.78911.76612.67993.5396
O72.38161.34902.25073.27542.67992.67990.9692
H83.17931.83692.23423.93033.53963.53960.9692

picture of Acetic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 124.422 C1 C2 O7 112.923
C2 C1 H4 107.043 C2 C1 H5 110.959
C2 C1 H6 110.959 C2 O7 H8 103.605
O3 C2 O7 122.655 H4 C1 H5 110.195
H4 C1 H6 110.195 H5 C1 H6 107.514
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability