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

using model chemistry: MP2/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-302.612454
Energy at 298.15K-302.615621
HF Energy-301.610734
Nuclear repulsion energy163.190390
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/Def2TZVPP
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' 3681 3503 120.77      
2 A' 3078 2928 31.13      
3 A' 1829 1740 174.23      
4 A' 1738 1654 65.14      
5 A' 1396 1328 310.05      
6 A' 1359 1294 21.76      
7 A' 1232 1172 7.21      
8 A' 898 854 53.39      
9 A' 688 655 13.63      
10 A' 505 480 5.22      
11 A' 284 270 33.82      
12 A" 1013 964 2.87      
13 A" 699 665 81.22      
14 A" 582 554 23.85      
15 A" 174 166 25.72      

Unscaled Zero Point Vibrational Energy (zpe) 9577.2 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 9112.7 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/Def2TZVPP
ABC
0.36860 0.15338 0.10831

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.740 -0.758 0.000
C2 0.000 0.585 0.000
O3 -0.145 -1.810 0.000
O4 -0.583 1.635 0.000
O5 1.323 0.452 0.000
H6 -1.835 -0.673 0.000
H7 1.514 -0.497 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.53351.20812.39852.39191.09842.2686
C21.53352.39981.20101.33002.22451.8609
O31.20812.39983.47302.69752.03642.1161
O42.39851.20103.47302.24362.62542.9905
O52.39191.33002.69752.24363.35240.9683
H61.09842.22452.03642.62543.35243.3531
H72.26861.86092.11612.99050.96833.3531

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 122.119 C1 C2 O5 113.103
C2 C1 O3 121.707 C2 C1 H6 114.372
C2 O5 H7 107.080 O3 C1 H6 123.921
O4 C2 O5 124.778
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability