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

using model chemistry: MP2=FULL/6-311G*

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=FULL/6-311G*
 hartrees
Energy at 0K-228.596694
Energy at 298.15K-228.601563
HF Energy-227.863816
Nuclear repulsion energy121.148134
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=FULL/6-311G*
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' 3780 3580 49.00      
2 A' 3234 3063 4.08      
3 A' 3109 2944 1.74      
4 A' 1854 1756 262.73      
5 A' 1514 1434 16.76      
6 A' 1452 1375 76.27      
7 A' 1378 1305 17.68      
8 A' 1248 1182 241.58      
9 A' 1027 973 60.90      
10 A' 887 840 3.77      
11 A' 596 564 44.41      
12 A' 430 407 4.14      
13 A" 3193 3024 3.62      
14 A" 1515 1435 12.21      
15 A" 1093 1035 7.77      
16 A" 697 660 125.09      
17 A" 559 529 25.25      
18 A" 75 71 0.76      

Unscaled Zero Point Vibrational Energy (zpe) 13820.7 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 13089.5 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 MP2=FULL/6-311G*
ABC
0.37734 0.31709 0.17798

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.063 -0.904 0.000
C2 0.000 0.157 0.000
O3 0.180 1.352 0.000
H4 2.043 -0.434 0.000
H5 0.951 -1.539 0.880
H6 0.951 -1.539 -0.880
O7 -1.237 -0.395 0.000
H8 -1.865 0.340 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50152.42201.08701.09101.09102.35483.1806
C21.50151.20792.12672.13432.13431.35431.8737
O32.42201.20792.58073.11843.11842.24882.2811
H41.08702.12672.58071.78541.78543.27973.9836
H51.09102.13433.11841.78541.75982.62073.4975
H61.09102.13433.11841.78541.75982.62073.4975
O72.35481.35432.24883.27972.62072.62070.9669
H83.18061.87372.28113.98363.49753.49750.9669

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 126.399 C1 C2 O7 110.982
C2 C1 H4 109.447 C2 C1 H5 109.813
C2 C1 H6 109.813 C2 O7 H8 106.453
O3 C2 O7 122.620 H4 C1 H5 110.115
H4 C1 H6 110.115 H5 C1 H6 107.514
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability