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

using model chemistry: MP2/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-228.722616
Energy at 298.15K-228.727454
HF Energy-227.905144
Nuclear repulsion energy121.133591
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/aug-cc-pVTZ
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' 3752 3575 75.62      
2 A' 3224 3072 2.02      
3 A' 3097 2952 0.98      
4 A' 1810 1725 289.03      
5 A' 1493 1422 15.53      
6 A' 1422 1355 61.52      
7 A' 1343 1279 43.72      
8 A' 1206 1150 199.85      
9 A' 1009 961 70.21      
10 A' 874 833 5.26      
11 A' 583 556 37.80      
12 A' 423 403 3.86      
13 A" 3181 3031 1.33      
14 A" 1501 1430 8.72      
15 A" 1076 1026 5.13      
16 A" 662 631 88.72      
17 A" 550 524 25.23      
18 A" 78 74 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 13642.3 cm-1
Scaled (by 0.9529) Zero Point Vibrational Energy (zpe) 12999.7 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/aug-cc-pVTZ
ABC
0.37652 0.31777 0.17799

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.996 -0.976 0.000
C2 0.000 0.142 0.000
O3 0.288 1.325 0.000
H4 1.981 -0.529 0.000
H5 0.864 -1.603 0.880
H6 0.864 -1.603 -0.880
O7 -1.274 -0.297 0.000
H8 -1.802 0.514 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.49712.40671.08161.08911.08912.36903.1696
C21.49711.21712.09162.13762.13761.34741.8399
O32.40671.21712.51013.11143.11142.25182.2422
H41.08162.09162.51011.78211.78213.26303.9240
H51.08912.13763.11141.78211.76042.65593.5168
H61.08912.13763.11141.78211.76042.65593.5168
O72.36901.34742.25183.26302.65592.65590.9677
H83.16961.83992.24223.92403.51683.51680.9677

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 124.595 C1 C2 O7 112.673
C2 C1 H4 107.304 C2 C1 H5 110.496
C2 C1 H6 110.496 C2 O7 H8 104.058
O3 C2 O7 122.732 H4 C1 H5 110.365
H4 C1 H6 110.365 H5 C1 H6 107.832
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability