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All results from a given calculation for C2H2O4 (Oxalic Acid)

using model chemistry: B2PLYP=FULL/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B2PLYP=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-378.109703
Energy at 298.15K-378.113881
HF Energy-377.712867
Nuclear repulsion energy234.594446
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 B2PLYP=FULL/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3662 3662 0.00      
2 Ag 1847 1847 0.00      
3 Ag 1475 1475 0.00      
4 Ag 1248 1248 0.00      
5 Ag 837 837 0.00      
6 Ag 573 573 0.00      
7 Ag 415 415 0.00      
8 Au 736 736 175.55      
9 Au 472 472 47.91      
10 Au 133 133 5.41      
11 Bg 845 845 0.00      
12 Bg 731 731 0.00      
13 Bu 3666 3666 254.06      
14 Bu 1871 1871 361.35      
15 Bu 1365 1365 793.48      
16 Bu 1226 1226 13.94      
17 Bu 673 673 20.78      
18 Bu 272 272 54.11      

Unscaled Zero Point Vibrational Energy (zpe) 11023.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11023.1 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 B2PLYP=FULL/6-31G(2df,p)
ABC
0.19313 0.12939 0.07748

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G(2df,p)

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.054 0.766 0.000
C2 0.054 -0.766 0.000
O3 1.125 1.365 0.000
O4 -1.125 -1.365 0.000
O5 -1.125 1.318 0.000
O6 1.125 -1.318 0.000
H7 1.788 0.651 0.000
H8 -1.788 -0.651 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.53521.32222.38451.20532.39421.84582.2396
C21.53522.38451.32222.39421.20532.23961.8458
O31.32222.38453.53712.25062.68270.97443.5427
O42.38451.32223.53712.68272.25063.54270.9744
O51.20532.39422.25062.68273.46592.98892.0778
O62.39421.20532.68272.25063.46592.07782.9889
H71.84582.23960.97443.54272.98892.07783.8065
H82.23961.84583.54270.97442.07782.98893.8065

picture of Oxalic Acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O4 112.915 C1 C2 O6 121.293
C1 O3 H7 105.980 C2 C1 O3 112.915
C2 C1 O5 121.293 C2 O4 H8 105.980
O3 C1 O5 125.792 O4 C2 O6 125.792
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability