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

using model chemistry: QCISD/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 QCISD/6-31G*
 hartrees
Energy at 0K-302.273597
Energy at 298.15K-302.276750
HF Energy-301.474572
Nuclear repulsion energy162.439750
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/6-31G*
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' 3654 3480 94.67      
2 A' 3086 2939 34.13      
3 A' 1904 1813 143.95      
4 A' 1803 1717 105.25      
5 A' 1438 1369 358.57      
6 A' 1374 1309 14.70      
7 A' 1262 1201 8.67      
8 A' 906 862 50.59      
9 A' 690 657 17.19      
10 A' 511 487 5.80      
11 A' 299 285 33.44      
12 A" 995 947 3.64      
13 A" 682 650 96.12      
14 A" 565 538 46.07      
15 A" 173 164 26.53      

Unscaled Zero Point Vibrational Energy (zpe) 9669.7 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 9208.5 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 QCISD/6-31G*
ABC
0.36346 0.15251 0.10743

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.755 -0.750 0.000
C2 0.000 0.582 0.000
O3 -0.147 -1.807 0.000
O4 -0.581 1.642 0.000
O5 1.335 0.441 0.000
H6 -1.854 -0.676 0.000
H7 1.527 -0.521 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.53131.21912.39882.40551.10222.2928
C21.53132.39391.20861.34232.24091.8831
O31.21912.39393.47652.69312.04812.1112
O42.39881.20863.47652.26072.64503.0195
O52.40551.34232.69312.26073.37930.9808
H61.10222.24092.04812.64503.37933.3846
H72.29281.88312.11123.01950.98083.3846

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 121.760 C1 C2 O5 113.511
C2 C1 O3 120.582 C2 C1 H6 115.660
C2 O5 H7 107.289 O3 C1 H6 123.758
O4 C2 O5 124.729
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability