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

using model chemistry: CCSD/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 CCSD/6-31G*
 hartrees
Energy at 0K-228.441316
Energy at 298.15K-228.446202
HF Energy-227.807734
Nuclear repulsion energy120.754646
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/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' 3716 3509 53.40      
2 A' 3212 3033 5.28      
3 A' 3097 2925 1.87      
4 A' 1896 1790 276.73      
5 A' 1527 1442 12.40      
6 A' 1471 1389 72.83      
7 A' 1399 1321 23.63      
8 A' 1261 1191 217.23      
9 A' 1038 980 53.62      
10 A' 891 841 2.23      
11 A' 592 559 47.70      
12 A' 427 403 4.41      
13 A" 3170 2994 4.74      
14 A" 1525 1440 8.90      
15 A" 1103 1042 8.19      
16 A" 687 649 123.43      
17 A" 554 523 22.29      
18 A" 95 90 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 13831.3 cm-1
Scaled (by 0.9443) Zero Point Vibrational Energy (zpe) 13060.9 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/6-31G*
ABC
0.37552 0.31493 0.17695

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.999 -0.981 0.000
C2 0.000 0.144 0.000
O3 0.285 1.329 0.000
H4 1.990 -0.528 0.000
H5 0.872 -1.614 0.886
H6 0.872 -1.614 -0.886
O7 -1.275 -0.297 0.000
H8 -1.805 0.520 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50492.41791.08871.09641.09642.37483.1807
C21.50491.21842.10022.15332.15331.34951.8437
O32.41791.21842.52123.12923.12922.25352.2406
H41.08872.10022.52121.79271.79273.27283.9367
H51.09642.15333.12921.79271.77142.66943.5361
H61.09642.15333.12921.79271.77142.66943.5361
O72.37481.34952.25353.27282.66942.66940.9744
H83.18071.84372.24063.93673.53613.53610.9744

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 124.882 C1 C2 O7 112.495
C2 C1 H4 107.049 C2 C1 H5 110.766
C2 C1 H6 110.766 C2 O7 H8 103.826
O3 C2 O7 122.623 H4 C1 H5 110.254
H4 C1 H6 110.254 H5 C1 H6 107.773
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability