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

using model chemistry: CCD/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at CCD/TZVP
 hartrees
Energy at 0K-377.551259
Energy at 298.15K-377.555314
HF Energy-376.508055
Nuclear repulsion energy234.399548
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 CCD/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 Ag 3789 3592 0.00      
2 Ag 1912 1813 0.00      
3 Ag 1485 1408 0.00      
4 Ag 1258 1192 0.00      
5 Ag 848 804 0.00      
6 Ag 575 545 0.00      
7 Ag 416 395 0.00      
8 Au 650 616 216.19      
9 Au 458 434 78.14      
10 Au 109 103 4.94      
11 Bg 822 780 0.00      
12 Bg 635 602 0.00      
13 Bu 3793 3596 259.76      
14 Bu 1922 1822 495.13      
15 Bu 1368 1297 799.95      
16 Bu 1231 1167 27.62      
17 Bu 692 656 25.58      
18 Bu 266 252 50.36      

Unscaled Zero Point Vibrational Energy (zpe) 11114.2 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 10536.2 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 CCD/TZVP
ABC
0.19537 0.12726 0.07706

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.053 0.770 0.000
C2 0.053 -0.770 0.000
O3 1.118 1.386 0.000
O4 -1.118 -1.386 0.000
O5 -1.118 1.316 0.000
O6 1.118 -1.316 0.000
H7 1.804 0.701 0.000
H8 -1.804 -0.701 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.54391.32332.40481.19722.39291.85832.2872
C21.54392.40481.32332.39291.19722.28721.8583
O31.32332.40483.56152.23772.70230.96883.5912
O42.40481.32333.56152.70232.23773.59120.9688
O51.19722.39292.23772.70233.45472.98632.1312
O62.39291.19722.70232.23773.45472.13122.9863
H71.85832.28720.96883.59122.98632.13123.8712
H82.28721.85833.59120.96882.13122.98633.8712

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 113.789 C1 C2 O6 121.090
C1 O3 H7 107.328 C2 C1 O3 113.789
C2 C1 O5 121.090 C2 O4 H8 107.328
O3 C1 O5 125.121 O4 C2 O6 125.121
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability