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

using model chemistry: MP2/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-60.023358
Energy at 298.15K-60.026433
HF Energy-59.224808
Nuclear repulsion energy86.584301
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/CEP-121G*
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' 3642 3470 100.31      
2 A' 3096 2949 33.98      
3 A' 1796 1711 154.56      
4 A' 1697 1617 77.61      
5 A' 1401 1335 352.47      
6 A' 1355 1291 23.12      
7 A' 1220 1163 3.28      
8 A' 882 841 56.38      
9 A' 674 642 14.61      
10 A' 494 471 5.54      
11 A' 286 272 31.81      
12 A" 975 929 3.36      
13 A" 675 643 95.26      
14 A" 541 516 41.75      
15 A" 161 153 26.52      

Unscaled Zero Point Vibrational Energy (zpe) 9447.3 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 9001.4 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 MP2/CEP-121G*
ABC
0.35857 0.14936 0.10544

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.763 -0.756 0.000
C2 0.000 0.587 0.000
O3 -0.152 -1.826 0.000
O4 -0.580 1.662 0.000
O5 1.346 0.442 0.000
H6 -1.862 -0.680 0.000
H7 1.523 -0.525 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.54441.23202.42472.42591.10142.2974
C21.54442.41731.22131.35412.25221.8855
O31.23202.41733.51362.71812.05812.1204
O42.42471.22133.51362.27972.67023.0335
O52.42591.35412.71812.27973.39900.9832
H61.10142.25222.05812.67023.39903.3882
H72.29741.88552.12043.03350.98323.3882

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 122.061 C1 C2 O5 113.474
C2 C1 O3 120.655 C2 C1 H6 115.673
C2 O5 H7 106.466 O3 C1 H6 123.672
O4 C2 O5 124.465
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability