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

using model chemistry: MP2=FULL/TZVP

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/TZVP
 hartrees
Energy at 0K-302.529899
Energy at 298.15K-302.533011
HF Energy-301.585456
Nuclear repulsion energy162.910560
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/TZVP
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' 3710 3535 115.87      
2 A' 3093 2946 32.40      
3 A' 1828 1742 170.20      
4 A' 1737 1655 65.39      
5 A' 1390 1325 84.24      
6 A' 1382 1317 249.28      
7 A' 1216 1159 5.16      
8 A' 893 851 55.06      
9 A' 688 656 13.44      
10 A' 508 484 5.45      
11 A' 283 269 32.37      
12 A" 994 947 2.23      
13 A" 663 631 73.35      
14 A" 548 522 53.91      
15 A" 162 155 25.47      

Unscaled Zero Point Vibrational Energy (zpe) 9547.6 cm-1
Scaled (by 0.9527) Zero Point Vibrational Energy (zpe) 9096.0 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/TZVP
ABC
0.36695 0.15279 0.10787

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.751 -0.750 0.000
C2 0.000 0.581 0.000
O3 -0.151 -1.806 0.000
O4 -0.575 1.640 0.000
O5 1.331 0.441 0.000
H6 -1.845 -0.673 0.000
H7 1.508 -0.516 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.52791.21492.39622.39871.09642.2711
C21.52792.39141.20521.33842.23031.8648
O31.21492.39143.47192.69162.03832.1009
O42.39621.20523.47192.25172.63822.9981
O52.39871.33842.69162.25173.36550.9738
H61.09642.23032.03832.63823.36553.3564
H72.27111.86482.10092.99810.97383.3564

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 122.057 C1 C2 O5 113.459
C2 C1 O3 120.934 C2 C1 H6 115.405
C2 O5 H7 106.450 O3 C1 H6 123.661
O4 C2 O5 124.484
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability