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

using model chemistry: CCSD/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 CCSD/cc-pVTZ
 hartrees
Energy at 0K-228.719031
Energy at 298.15K-228.723910
HF Energy-227.903075
Nuclear repulsion energy121.500267
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 CCSD/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' 3828 3603 66.41      
2 A' 3199 3011 4.57      
3 A' 3085 2904 1.99      
4 A' 1879 1769 304.54      
5 A' 1495 1407 12.65      
6 A' 1445 1360 78.10      
7 A' 1374 1293 19.05      
8 A' 1243 1170 210.76      
9 A' 1021 961 53.79      
10 A' 885 833 2.79      
11 A' 596 561 43.52      
12 A' 425 400 3.74      
13 A" 3156 2970 4.34      
14 A" 1501 1413 7.56      
15 A" 1088 1024 6.63      
16 A" 671 632 91.53      
17 A" 554 522 28.76      
18 A" 85 80 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 13764.3 cm-1
Scaled (by 0.9412) Zero Point Vibrational Energy (zpe) 12955.0 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 CCSD/cc-pVTZ
ABC
0.38084 0.31759 0.17890

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.985 -0.987 0.000
C2 0.000 0.143 0.000
O3 0.300 1.314 0.000
H4 1.975 -0.551 0.000
H5 0.849 -1.614 0.881
H6 0.849 -1.614 -0.881
O7 -1.275 -0.275 0.000
H8 -1.785 0.540 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.49952.40101.08221.08981.08982.36953.1634
C21.49951.20852.09382.14102.14101.34161.8285
O32.40101.20852.50693.10643.10642.23702.2234
H41.08222.09382.50691.78241.78243.26193.9154
H51.08982.14103.10641.78241.76192.66023.5146
H61.08982.14103.10641.78241.76192.66023.5146
O72.36951.34162.23703.26192.66022.66020.9621
H83.16341.82852.22343.91543.51463.51460.9621

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 124.560 C1 C2 O7 112.906
C2 C1 H4 107.284 C2 C1 H5 110.557
C2 C1 H6 110.557 C2 O7 H8 103.843
O3 C2 O7 122.534 H4 C1 H5 110.297
H4 C1 H6 110.297 H5 C1 H6 107.867
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability