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All results from a given calculation for CHOCOOH (oxo acetic acid)

using model chemistry: CCD/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 CCD/6-31G**
 hartrees
Energy at 0K-302.279418
Energy at 298.15K-302.282602
HF Energy-301.484814
Nuclear repulsion energy162.973833
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 CCD/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' 3828 3589 97.84      
2 A' 3138 2942 32.38      
3 A' 1942 1821 159.24      
4 A' 1849 1734 87.03      
5 A' 1443 1353 345.59      
6 A' 1396 1309 28.58      
7 A' 1270 1191 15.56      
8 A' 918 861 51.41      
9 A' 698 654 17.88      
10 A' 520 488 6.22      
11 A' 298 280 33.18      
12 A" 1010 947 3.54      
13 A" 671 629 84.15      
14 A" 572 536 55.28      
15 A" 174 164 25.90      

Unscaled Zero Point Vibrational Energy (zpe) 9863.9 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 9248.4 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 CCD/6-31G**
ABC
0.36497 0.15348 0.10804

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.752 -0.751 0.000
C2 0.000 0.579 0.000
O3 -0.147 -1.803 0.000
O4 -0.582 1.633 0.000
O5 1.332 0.445 0.000
H6 -1.845 -0.675 0.000
H7 1.531 -0.504 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.52791.21372.39032.40251.09572.2959
C21.52792.38661.20411.33872.23091.8752
O31.21372.38663.46372.69042.03882.1215
O42.39031.20413.46372.25292.63113.0053
O52.40251.33872.69042.25293.36840.9694
H61.09572.23092.03882.63113.36843.3800
H72.29591.87522.12153.00530.96943.3800

picture of oxo acetic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O4 121.614 C1 C2 O5 113.719
C2 C1 O3 120.606 C2 C1 H6 115.503
C2 O5 H7 107.593 O3 C1 H6 123.891
O4 C2 O5 124.667
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability