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

using model chemistry: MP2/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/cc-pVTZ
 hartrees
Energy at 0K-302.602824
Energy at 298.15K-302.606021
HF Energy-301.596500
Nuclear repulsion energy163.214106
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/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' 3679 3493 118.07      
2 A' 3077 2922 33.20      
3 A' 1838 1745 161.72      
4 A' 1741 1653 63.21      
5 A' 1403 1332 311.72      
6 A' 1360 1291 20.45      
7 A' 1234 1172 9.07      
8 A' 901 855 52.20      
9 A' 690 655 13.60      
10 A' 506 481 4.86      
11 A' 286 272 34.26      
12 A" 1021 970 3.08      
13 A" 706 670 78.06      
14 A" 586 556 24.60      
15 A" 178 169 24.43      

Unscaled Zero Point Vibrational Energy (zpe) 9602.6 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 9117.7 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 MP2/cc-pVTZ
ABC
0.36880 0.15350 0.10839

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.749 -0.745 0.000
C2 0.000 0.582 0.000
O3 -0.147 -1.800 0.000
O4 -0.574 1.641 0.000
O5 1.327 0.431 0.000
H6 -1.843 -0.669 0.000
H7 1.485 -0.530 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.52391.21482.39322.38691.09632.2447
C21.52392.38651.20511.33592.22701.8549
O31.21482.38653.46802.67472.03882.0682
O42.39321.20513.46802.25372.63562.9921
O52.38691.33592.67472.25373.35580.9740
H61.09632.22702.03882.63563.35583.3308
H72.24471.85492.06822.99210.97403.3308

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 122.112 C1 C2 O5 112.991
C2 C1 O3 120.825 C2 C1 H6 115.437
C2 O5 H7 105.770 O3 C1 H6 123.737
O4 C2 O5 124.897
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability