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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G**
 hartrees
Energy at 0K-302.293863
Energy at 298.15K-302.297048
HF Energy-301.481869
Nuclear repulsion energy162.570173
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 MP2=FULL/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3736 3491 107.02      
2 A' 3136 2931 35.80      
3 A' 1860 1738 132.17      
4 A' 1751 1636 53.22      
5 A' 1418 1325 324.97      
6 A' 1382 1291 25.41      
7 A' 1245 1164 17.86      
8 A' 909 849 52.44      
9 A' 688 643 14.38      
10 A' 508 475 5.03      
11 A' 296 276 34.09      
12 A" 1009 942 2.91      
13 A" 704 658 93.31      
14 A" 571 533 36.37      
15 A" 182 170 24.11      

Unscaled Zero Point Vibrational Energy (zpe) 9696.4 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 9060.3 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 MP2=FULL/6-31G**
ABC
0.36556 0.15268 0.10770

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.754 -0.742 0.000
C2 0.000 0.581 0.000
O3 -0.147 -1.806 0.000
O4 -0.576 1.650 0.000
O5 1.332 0.427 0.000
H6 -1.847 -0.665 0.000
H7 1.499 -0.533 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.52281.22472.39832.39161.09542.2628
C21.52282.39111.21391.34092.22781.8675
O31.22472.39113.48182.67852.04702.0808
O42.39831.21393.48182.26582.64083.0113
O52.39161.34092.67852.26583.36140.9746
H61.09542.22782.04702.64083.36143.3485
H72.26281.86752.08083.01130.97463.3485

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 122.006 C1 C2 O5 113.109
C2 C1 O3 120.603 C2 C1 H6 115.654
C2 O5 H7 106.437 O3 C1 H6 123.743
O4 C2 O5 124.886
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability