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

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

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/6-31G*
 hartrees
Energy at 0K-228.444192
Energy at 298.15K-228.449108
HF Energy-227.808774
Nuclear repulsion energy121.171244
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/6-31G*
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' 3772 3539 61.35      
2 A' 3247 3047 3.93      
3 A' 3128 2935 1.08      
4 A' 1939 1819 298.39      
5 A' 1535 1441 13.03      
6 A' 1483 1391 85.96      
7 A' 1410 1323 22.81      
8 A' 1276 1198 226.31      
9 A' 1046 982 50.68      
10 A' 903 847 2.17      
11 A' 601 564 49.61      
12 A' 432 405 4.69      
13 A" 3203 3006 3.29      
14 A" 1534 1439 9.63      
15 A" 1111 1043 9.18      
16 A" 691 648 123.20      
17 A" 560 526 25.96      
18 A" 100 94 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 13985.1 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 13122.2 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/6-31G*
ABC
0.37880 0.31651 0.17815

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.999 -0.977 0.000
C2 0.000 0.144 0.000
O3 0.281 1.323 0.000
H4 1.985 -0.523 0.000
H5 0.871 -1.609 0.884
H6 0.871 -1.609 -0.884
O7 -1.271 -0.295 0.000
H8 -1.800 0.519 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50072.40911.08631.09391.09392.36933.1732
C21.50071.21232.09412.14712.14711.34431.8388
O32.40911.21232.51233.11833.11832.24182.2306
H41.08632.09412.51231.78941.78943.26393.9261
H51.09392.14713.11831.78941.76752.66333.5275
H61.09392.14713.11831.78941.76752.66333.5275
O72.36931.34432.24183.26392.66332.66330.9714
H83.17321.83882.23063.92613.52753.52750.9714

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 124.899 C1 C2 O7 112.655
C2 C1 H4 107.003 C2 C1 H5 110.717
C2 C1 H6 110.717 C2 O7 H8 103.967
O3 C2 O7 122.446 H4 C1 H5 110.323
H4 C1 H6 110.323 H5 C1 H6 107.781
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability