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

using model chemistry: MP2/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/TZVP
 hartrees
Energy at 0K-228.578559
Energy at 298.15K-228.583327
HF Energy-227.894635
Nuclear repulsion energy121.028079
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 MP2/TZVP
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' 3784 3587 66.80      
2 A' 3239 3070 3.57      
3 A' 3114 2951 1.86      
4 A' 1826 1731 273.51      
5 A' 1502 1424 13.60      
6 A' 1438 1363 54.30      
7 A' 1357 1286 40.78      
8 A' 1224 1160 213.17      
9 A' 1019 966 77.83      
10 A' 876 830 6.05      
11 A' 593 562 37.80      
12 A' 431 408 3.92      
13 A" 3199 3033 3.08      
14 A" 1494 1416 9.67      
15 A" 1078 1022 4.89      
16 A" 642 609 100.13      
17 A" 537 509 32.96      
18 A" 45 42 0.71      

Unscaled Zero Point Vibrational Energy (zpe) 13696.8 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 12983.2 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 MP2/TZVP
ABC
0.37592 0.31702 0.17764

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.072 -0.893 0.000
C2 0.000 0.156 0.000
O3 0.169 1.353 0.000
H4 2.045 -0.414 0.000
H5 0.966 -1.525 0.880
H6 0.966 -1.525 -0.880
O7 -1.237 -0.409 0.000
H8 -1.866 0.330 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.49992.42121.08481.08881.08882.35963.1826
C21.49991.20952.12322.12892.12891.35961.8740
O32.42121.20952.57753.11373.11372.25412.2776
H41.08482.12322.57751.78201.78203.28253.9814
H51.08882.12893.11371.78201.76022.62183.4978
H61.08882.12893.11371.78201.76022.62183.4978
O72.35961.35962.25413.28252.62182.62180.9700
H83.18261.87402.27763.98143.49783.49780.9700

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 126.336 C1 C2 O7 111.119
C2 C1 H4 109.412 C2 C1 H5 109.633
C2 C1 H6 109.633 C2 O7 H8 105.896
O3 C2 O7 122.545 H4 C1 H5 110.136
H4 C1 H6 110.136 H5 C1 H6 107.871
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability