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

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-301.879258
Energy at 298.15K-301.882306
HF Energy-301.310765
Nuclear repulsion energy158.954857
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 MP2/6-31G
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' 3551 3397 81.81      
2 A' 3121 2986 28.30      
3 A' 1691 1618 74.18      
4 A' 1569 1502 23.09      
5 A' 1369 1310 6.71      
6 A' 1301 1244 336.99      
7 A' 1197 1145 7.22      
8 A' 852 815 72.49      
9 A' 660 631 12.09      
10 A' 502 480 4.66      
11 A' 289 277 32.91      
12 A" 960 919 5.06      
13 A" 638 611 138.96      
14 A" 530 507 58.70      
15 A" 175 167 26.88      

Unscaled Zero Point Vibrational Energy (zpe) 9201.9 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 8804.3 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 MP2/6-31G
ABC
0.34616 0.14723 0.10330

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.788 -0.730 0.000
C2 0.000 0.575 0.000
O3 -0.191 -1.842 0.000
O4 -0.559 1.689 0.000
O5 1.374 0.417 0.000
H6 -1.881 -0.635 0.000
H7 1.618 -0.540 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.52471.26232.43052.44781.09702.4143
C21.52472.42461.24691.38292.23661.9651
O31.26232.42463.55082.74832.07722.2295
O42.43051.24693.55082.31402.67423.1161
O52.44781.38292.74832.31403.42090.9875
H61.09702.23662.07722.67423.42093.5010
H72.41431.96512.22953.11610.98753.5010

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 122.234 C1 C2 O5 114.584
C2 C1 O3 120.617 C2 C1 H6 116.153
C2 O5 H7 110.891 O3 C1 H6 123.230
O4 C2 O5 123.182
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability