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

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

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-pVTZ
 hartrees
Energy at 0K-378.277877
Energy at 298.15K-378.282007
HF Energy-377.834947
Nuclear repulsion energy234.260146
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-pVTZ
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 3651 3503 0.00      
2 Ag 1814 1740 0.00      
3 Ag 1442 1384 0.00      
4 Ag 1228 1178 0.00      
5 Ag 827 793 0.00      
6 Ag 564 541 0.00      
7 Ag 408 391 0.00      
8 Au 715 686 178.48      
9 Au 471 452 51.53      
10 Au 125 120 6.41      
11 Bg 845 811 0.00      
12 Bg 711 682 0.00      
13 Bu 3655 3506 265.43      
14 Bu 1838 1764 457.39      
15 Bu 1336 1282 784.86      
16 Bu 1206 1157 17.69      
17 Bu 672 645 21.88      
18 Bu 261 251 52.32      

Unscaled Zero Point Vibrational Energy (zpe) 10884.6 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 10442.7 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 B2PLYP=FULL/aug-cc-pVTZ
ABC
0.19396 0.12809 0.07714

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.053 0.767 0.000
C2 0.053 -0.767 0.000
O3 1.122 1.375 0.000
O4 -1.122 -1.375 0.000
O5 -1.122 1.321 0.000
O6 1.122 -1.321 0.000
H7 1.804 0.679 0.000
H8 -1.804 -0.679 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.53751.32332.39341.20392.39631.85912.2701
C21.53752.39341.32332.39631.20392.27011.8591
O31.32332.39343.54902.24472.69600.97383.5745
O42.39341.32333.54902.69602.24473.57450.9738
O51.20392.39632.24472.69603.46692.99532.1132
O62.39631.20392.69602.24473.46692.11322.9953
H71.85912.27010.97383.57452.99532.11323.8543
H82.27011.85913.57450.97382.11322.99533.8543

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 113.355 C1 C2 O6 121.408
C1 O3 H7 107.069 C2 C1 O3 113.355
C2 C1 O5 121.408 C2 O4 H8 107.069
O3 C1 O5 125.238 O4 C2 O6 125.238
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability