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

using model chemistry: QCISD/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-302.312734
Energy at 298.15K-302.315837
HF Energy-301.492808
Nuclear repulsion energy162.248115
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/6-31+G**
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' 3774 3568 103.53      
2 A' 3125 2955 27.62      
3 A' 1872 1770 170.68      
4 A' 1791 1693 142.15      
5 A' 1406 1329 312.01      
6 A' 1381 1305 30.37      
7 A' 1243 1175 9.70      
8 A' 899 850 55.19      
9 A' 683 646 16.11      
10 A' 510 482 6.74      
11 A' 288 273 32.05      
12 A" 994 939 4.04      
13 A" 653 617 77.31      
14 A" 557 526 62.92      
15 A" 157 149 30.17      

Unscaled Zero Point Vibrational Energy (zpe) 9665.8 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 9138.1 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/6-31+G**
ABC
0.36145 0.15205 0.10703

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.754 -0.756 0.000
C2 0.000 0.578 0.000
O3 -0.147 -1.813 0.000
O4 -0.588 1.636 0.000
O5 1.337 0.457 0.000
H6 -1.848 -0.681 0.000
H7 1.556 -0.491 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.53251.21942.39762.41751.09642.3248
C21.53252.39631.21041.34302.23641.8879
O31.21942.39633.47762.71242.04302.1558
O42.39761.21043.47762.25842.63753.0204
O52.41751.34302.71242.25843.38250.9727
H61.09642.23642.04302.63753.38253.4088
H72.32481.88792.15583.02040.97273.4088

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 121.439 C1 C2 O5 114.272
C2 C1 O3 120.680 C2 C1 H6 115.580
C2 O5 H7 108.165 O3 C1 H6 123.740
O4 C2 O5 124.290
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability