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

using model chemistry: MP2=FULL/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=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-228.789702
Energy at 298.15K-228.794565
HF Energy-227.905991
Nuclear repulsion energy121.588934
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/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' 3774 3590 76.57      
2 A' 3221 3065 1.90      
3 A' 3109 2957 0.89      
4 A' 1825 1736 293.25      
5 A' 1500 1427 15.23      
6 A' 1430 1361 65.13      
7 A' 1350 1285 42.84      
8 A' 1214 1155 200.77      
9 A' 1014 964 70.00      
10 A' 884 841 5.14      
11 A' 588 560 38.47      
12 A' 428 407 3.58      
13 A" 3182 3027 1.17      
14 A" 1512 1438 8.82      
15 A" 1083 1031 5.52      
16 A" 669 636 85.29      
17 A" 555 529 29.41      
18 A" 80 76 0.25      

Unscaled Zero Point Vibrational Energy (zpe) 13708.8 cm-1
Scaled (by 0.9514) Zero Point Vibrational Energy (zpe) 13042.6 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/aug-cc-pVTZ
ABC
0.37912 0.32054 0.17942

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.989 -0.973 0.000
C2 0.000 0.141 0.000
O3 0.291 1.319 0.000
H4 1.973 -0.527 0.000
H5 0.857 -1.598 0.879
H6 0.857 -1.598 -0.879
O7 -1.270 -0.294 0.000
H8 -1.796 0.515 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.48982.39511.07961.08671.08672.35873.1576
C21.48981.21272.08292.12872.12871.34241.8344
O32.39511.21272.49683.09803.09802.24462.2366
H41.07962.08292.49681.77861.77863.25083.9101
H51.08672.12873.09801.77861.75802.64483.5035
H61.08672.12873.09801.77861.75802.64483.5035
O72.35871.34242.24463.25082.64482.64480.9653
H83.15761.83442.23663.91013.50353.50350.9653

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 124.489 C1 C2 O7 112.674
C2 C1 H4 107.247 C2 C1 H5 110.445
C2 C1 H6 110.445 C2 O7 H8 104.095
O3 C2 O7 122.838 H4 C1 H5 110.377
H4 C1 H6 110.377 H5 C1 H6 107.965
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability