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

using model chemistry: CISD/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 CISD/6-311G*
 hartrees
Energy at 0K-302.273312
Energy at 298.15K-302.276590
HF Energy-301.555424
Nuclear repulsion energy164.563707
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/6-311G*
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' 3934 3640 97.16      
2 A' 3169 2932 37.18      
3 A' 2002 1852 195.55      
4 A' 1926 1782 187.29      
5 A' 1487 1376 394.93      
6 A' 1425 1319 26.33      
7 A' 1291 1195 14.81      
8 A' 945 875 51.53      
9 A' 725 671 22.17      
10 A' 538 498 6.87      
11 A' 305 282 35.11      
12 A" 1074 994 3.37      
13 A" 686 634 69.51      
14 A" 607 562 97.17      
15 A" 178 165 29.96      

Unscaled Zero Point Vibrational Energy (zpe) 10144.9 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 9387.1 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 CISD/6-311G*
ABC
0.37172 0.15583 0.10980

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.738 -0.759 0.000
C2 0.000 0.580 0.000
O3 -0.138 -1.790 0.000
O4 -0.589 1.608 0.000
O5 1.316 0.460 0.000
H6 -1.829 -0.688 0.000
H7 1.549 -0.467 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.52881.19272.37202.38811.09422.3055
C21.52882.37441.18521.32142.22611.8702
O31.19272.37443.42842.67932.01852.1444
O42.37201.18523.42842.22452.60992.9803
O52.38811.32142.67932.22453.34840.9563
H61.09422.22612.01852.60993.34843.3860
H72.30551.87022.14442.98030.95633.3860

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 121.334 C1 C2 O5 113.632
C2 C1 O3 120.997 C2 C1 H6 115.134
C2 O5 H7 109.344 O3 C1 H6 123.869
O4 C2 O5 125.033
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability