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

using model chemistry: B2PLYP=FULL/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-378.097086
Energy at 298.15K-378.101171
HF Energy-377.743509
Nuclear repulsion energy232.973365
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/aug-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 Ag 3645 3505 0.00      
2 Ag 1800 1731 0.00      
3 Ag 1447 1392 0.00      
4 Ag 1225 1178 0.00      
5 Ag 823 792 0.00      
6 Ag 560 538 0.00      
7 Ag 403 388 0.00      
8 Au 703 676 176.95      
9 Au 463 446 52.73      
10 Au 124 119 6.24      
11 Bg 831 799 0.00      
12 Bg 698 671 0.00      
13 Bu 3648 3509 254.34      
14 Bu 1821 1752 437.40      
15 Bu 1338 1287 768.72      
16 Bu 1195 1150 21.36      
17 Bu 661 636 21.12      
18 Bu 257 247 51.95      

Unscaled Zero Point Vibrational Energy (zpe) 10820.6 cm-1
Scaled (by 0.9618) Zero Point Vibrational Energy (zpe) 10407.3 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/aug-cc-pVDZ
ABC
0.19182 0.12676 0.07632

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/aug-cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.053 0.768 0.000
C2 0.053 -0.768 0.000
O3 1.128 1.383 0.000
O4 -1.128 -1.383 0.000
O5 -1.128 1.328 0.000
O6 1.128 -1.328 0.000
H7 1.812 0.685 0.000
H8 -1.812 -0.685 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.53991.33132.40501.21302.40621.86662.2819
C21.53992.40501.33132.40621.21302.28191.8666
O31.33132.40503.56962.25752.71110.97733.5947
O42.40501.33133.56962.71112.25753.59470.9773
O51.21302.40622.25752.71113.48583.01032.1258
O62.40621.21302.71112.25753.48582.12583.0103
H71.86662.28190.97733.59473.01032.12583.8744
H82.28191.86663.59470.97732.12583.01033.8744

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 113.584 C1 C2 O6 121.411
C1 O3 H7 106.907 C2 C1 O3 113.584
C2 C1 O5 121.411 C2 O4 H8 106.907
O3 C1 O5 125.005 O4 C2 O6 125.005
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability