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

using model chemistry: MP3=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3=FULL/6-31+G**
 hartrees
Energy at 0K-228.496236
Energy at 298.15K-228.501111
HF Energy-227.827737
Nuclear repulsion energy121.211119
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 MP3=FULL/6-31+G**
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' 3897 3631 70.95      
2 A' 3281 3057 4.25      
3 A' 3155 2939 2.13      
4 A' 1906 1775 358.76      
5 A' 1531 1427 12.79      
6 A' 1475 1374 68.21      
7 A' 1390 1295 55.63      
8 A' 1259 1173 209.67      
9 A' 1045 973 62.97      
10 A' 898 837 3.16      
11 A' 597 556 46.43      
12 A' 432 403 4.42      
13 A" 3238 3016 3.70      
14 A" 1530 1426 8.99      
15 A" 1102 1027 5.55      
16 A" 662 617 108.13      
17 A" 552 515 37.95      
18 A" 83 77 0.27      

Unscaled Zero Point Vibrational Energy (zpe) 14016.2 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 13057.5 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 MP3=FULL/6-31+G**
ABC
0.37841 0.31663 0.17805

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.004 -0.973 0.000
C2 0.000 0.142 0.000
O3 0.278 1.324 0.000
H4 1.985 -0.521 0.000
H5 0.876 -1.600 0.880
H6 0.876 -1.600 -0.880
O7 -1.271 -0.298 0.000
H8 -1.812 0.499 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50032.40911.08041.08791.08792.37303.1772
C21.50031.21422.09262.13962.13961.34551.8466
O32.40911.21422.51343.11193.11192.24322.2465
H41.08042.09262.51341.77991.77993.26383.9312
H51.08792.13963.11191.77991.75952.66123.5225
H61.08792.13963.11191.77991.75952.66123.5225
O72.37301.34552.24323.26382.66122.66120.9634
H83.17721.84662.24653.93123.52253.52250.9634

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 124.783 C1 C2 O7 112.883
C2 C1 H4 107.236 C2 C1 H5 110.501
C2 C1 H6 110.501 C2 O7 H8 105.015
O3 C2 O7 122.334 H4 C1 H5 110.344
H4 C1 H6 110.344 H5 C1 H6 107.932
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability