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

using model chemistry: QCISD/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-311G**
 hartrees
Energy at 0K-302.428763
Energy at 298.15K-302.431942
HF Energy-301.561146
Nuclear repulsion energy163.070276
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 QCISD/6-311G**
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' 3792 3618 97.69      
2 A' 3058 2918 43.07      
3 A' 1900 1813 158.74      
4 A' 1806 1723 124.09      
5 A' 1429 1363 340.67      
6 A' 1373 1310 15.22      
7 A' 1253 1195 1.20      
8 A' 901 859 48.26      
9 A' 696 665 18.97      
10 A' 513 489 5.85      
11 A' 290 277 32.44      
12 A" 1016 970 2.21      
13 A" 667 637 63.28      
14 A" 575 549 60.35      
15 A" 174 166 23.53      

Unscaled Zero Point Vibrational Energy (zpe) 9721.8 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 9275.6 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 QCISD/6-311G**
ABC
0.36665 0.15292 0.10791

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.748 -0.759 0.000
C2 0.000 0.585 0.000
O3 -0.144 -1.805 0.000
O4 -0.583 1.633 0.000
O5 1.330 0.450 0.000
H6 -1.848 -0.680 0.000
H7 1.506 -0.502 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.53831.20832.39722.40411.10262.2685
C21.53832.39471.19861.33712.23951.8572
O31.20832.39473.46572.69362.04212.1022
O42.39721.19863.46572.24932.63602.9864
O52.40411.33712.69362.24933.37280.9675
H61.10262.23952.04212.63603.37283.3584
H72.26851.85722.10222.98640.96753.3584

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 121.806 C1 C2 O5 113.271
C2 C1 O3 120.887 C2 C1 H6 114.994
C2 O5 H7 106.282 O3 C1 H6 124.119
O4 C2 O5 124.923
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability