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

using model chemistry: CISD/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 CISD/6-31G*
 hartrees
Energy at 0K-302.146887
Energy at 298.15K-302.150140
HF Energy-301.478753
Nuclear repulsion energy164.029698
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 CISD/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' 3829 3545 122.16      
2 A' 3201 2963 29.43      
3 A' 2005 1856 183.56      
4 A' 1925 1783 157.61      
5 A' 1492 1382 379.47      
6 A' 1426 1320 22.71      
7 A' 1304 1208 22.82      
8 A' 949 878 52.36      
9 A' 718 665 21.13      
10 A' 535 495 6.94      
11 A' 308 285 36.13      
12 A" 1059 980 3.85      
13 A" 690 639 89.86      
14 A" 599 555 67.31      
15 A" 176 163 30.93      

Unscaled Zero Point Vibrational Energy (zpe) 10107.5 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 9357.5 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 CISD/6-31G*
ABC
0.36947 0.15548 0.10943

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.745 -0.752 0.000
C2 0.000 0.578 0.000
O3 -0.139 -1.791 0.000
O4 -0.585 1.619 0.000
O5 1.321 0.449 0.000
H6 -1.836 -0.682 0.000
H7 1.537 -0.496 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.52401.20232.37652.38911.09322.2958
C21.52402.37241.19471.32692.22631.8744
O31.20232.37243.43892.67342.02672.1180
O42.37651.19473.43892.23652.61892.9958
O52.38911.32692.67342.23653.35280.9688
H61.09322.22632.02672.61893.35283.3775
H72.29581.87442.11802.99580.96883.3775

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 121.417 C1 C2 O5 113.684
C2 C1 O3 120.506 C2 C1 H6 115.576
C2 O5 H7 108.453 O3 C1 H6 123.917
O4 C2 O5 124.899
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability