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

using model chemistry: CCD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/3-21G
 hartrees
Energy at 0K-300.321569
Energy at 298.15K-300.324777
HF Energy-299.772075
Nuclear repulsion energy160.607905
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 CCD/3-21G
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' 3511 3414 52.37      
2 A' 3078 2993 33.98      
3 A' 1841 1790 81.11      
4 A' 1684 1638 20.52      
5 A' 1385 1346 28.03      
6 A' 1355 1317 335.79      
7 A' 1198 1165 13.46      
8 A' 839 816 50.82      
9 A' 685 666 13.05      
10 A' 504 490 3.40      
11 A' 292 284 33.30      
12 A" 1029 1001 7.35      
13 A" 651 633 104.88      
14 A" 584 568 70.54      
15 A" 225 218 16.49      

Unscaled Zero Point Vibrational Energy (zpe) 9430.4 cm-1
Scaled (by 0.9723) Zero Point Vibrational Energy (zpe) 9169.2 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 CCD/3-21G
ABC
0.35615 0.14969 0.10539

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.788 -0.728 0.000
C2 0.000 0.588 0.000
O3 -0.192 -1.817 0.000
O4 -0.532 1.687 0.000
O5 1.359 0.385 0.000
H6 -1.878 -0.611 0.000
H7 1.530 -0.595 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.53401.24072.42922.41881.09602.3224
C21.53402.41191.22171.37412.22771.9338
O31.24072.41193.52042.69342.07242.1121
O42.42921.22173.52042.29622.66323.0759
O52.41881.37412.69342.29623.38670.9946
H61.09602.22772.07242.66323.38673.4083
H72.32241.93382.11213.07590.99463.4083

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 123.261 C1 C2 O5 112.442
C2 C1 O3 120.379 C2 C1 H6 114.764
C2 O5 H7 108.394 O3 C1 H6 124.857
O4 C2 O5 124.297
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability