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

using model chemistry: QCISD/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 QCISD/6-311G**
 hartrees
Energy at 0K-228.579838
Energy at 298.15K-228.584699
Nuclear repulsion energy121.082735
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 QCISD/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' 3851 3674 54.85      
2 A' 3193 3046 6.94      
3 A' 3080 2938 3.14      
4 A' 1871 1785 287.01      
5 A' 1498 1429 11.24      
6 A' 1446 1379 68.58      
7 A' 1377 1314 13.96      
8 A' 1250 1193 222.76      
9 A' 1022 975 57.17      
10 A' 882 841 3.14      
11 A' 595 568 45.36      
12 A' 425 406 3.10      
13 A" 3153 3008 7.12      
14 A" 1500 1432 8.09      
15 A" 1084 1034 6.38      
16 A" 663 633 97.94      
17 A" 541 516 30.27      
18 A" 84 81 0.52      

Unscaled Zero Point Vibrational Energy (zpe) 13757.2 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 13125.7 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 QCISD/6-311G**
ABC
0.37804 0.31534 0.17765

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.052 -0.924 0.000
C2 0.000 0.158 0.000
O3 0.203 1.345 0.000
H4 2.042 -0.467 0.000
H5 0.926 -1.556 0.885
H6 0.926 -1.556 -0.885
O7 -1.248 -0.371 0.000
H8 -1.847 0.384 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50922.42271.09041.09441.09442.36543.1810
C21.50921.20402.13562.13942.13941.35511.8612
O32.42271.20402.58193.11753.11752.24662.2641
H41.09042.13562.58191.79281.79283.29123.9816
H51.09442.13943.11751.79281.76942.62883.4981
H61.09442.13943.11751.79281.76942.62883.4981
O72.36541.35512.24663.29122.62882.62880.9642
H83.18101.86122.26413.98163.49813.49810.9642

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 126.110 C1 C2 O7 111.227
C2 C1 H4 109.416 C2 C1 H5 109.474
C2 C1 H6 109.474 C2 O7 H8 105.495
O3 C2 O7 122.663 H4 C1 H5 110.287
H4 C1 H6 110.287 H5 C1 H6 107.880
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability