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

using model chemistry: MP2/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-302.309719
Energy at 298.15K-302.312934
HF Energy-301.504159
Nuclear repulsion energy162.431020
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/cc-pVDZ
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' 3682 3507 117.68      
2 A' 3078 2931 44.99      
3 A' 1858 1770 142.48      
4 A' 1748 1665 62.74      
5 A' 1424 1356 328.27      
6 A' 1354 1289 12.63      
7 A' 1240 1181 6.32      
8 A' 904 861 48.34      
9 A' 691 658 14.49      
10 A' 506 482 4.58      
11 A' 288 274 33.47      
12 A" 1019 970 2.35      
13 A" 711 677 76.81      
14 A" 585 557 31.13      
15 A" 191 182 20.65      

Unscaled Zero Point Vibrational Energy (zpe) 9638.0 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 9180.2 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 MP2/cc-pVDZ
ABC
0.36654 0.15190 0.10739

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.753 -0.748 0.000
C2 0.000 0.587 0.000
O3 -0.145 -1.808 0.000
O4 -0.573 1.654 0.000
O5 1.332 0.426 0.000
H6 -1.861 -0.669 0.000
H7 1.466 -0.543 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.53231.22212.40872.39301.11122.2287
C21.53232.39931.21141.34182.24511.8512
O31.22212.39933.48862.67882.05982.0489
O42.40871.21143.48862.26642.65632.9978
O52.39301.34182.67882.26643.37600.9787
H61.11122.24512.05982.65633.37603.3301
H72.22871.85122.04892.99780.97873.3301

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 122.352 C1 C2 O5 112.564
C2 C1 O3 120.759 C2 C1 H6 115.350
C2 O5 H7 104.747 O3 C1 H6 123.892
O4 C2 O5 125.085
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability