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

using model chemistry: wB97X-D/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at wB97X-D/CEP-121G*
 hartrees
Energy at 0K-76.434768
Energy at 298.15K-76.438806
HF Energy-76.434768
Nuclear repulsion energy 
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 wB97X-D/CEP-121G*
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 3716 3716 0.00      
2 Ag 1856 1856 0.00      
3 Ag 1475 1475 0.00      
4 Ag 1232 1232 0.00      
5 Ag 830 830 0.00      
6 Ag 560 560 0.00      
7 Ag 405 405 0.00      
8 Au 688 688 231.79      
9 Au 453 453 66.43      
10 Au 118 118 6.41      
11 Bg 811 811 0.00      
12 Bg 680 680 0.00      
13 Bu 3719 3719 236.36      
14 Bu 1865 1865 530.23      
15 Bu 1359 1359 908.29      
16 Bu 1216 1216 15.58      
17 Bu 669 669 26.41      
18 Bu 263 263 55.17      

Unscaled Zero Point Vibrational Energy (zpe) 10956.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10956.5 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 wB97X-D/CEP-121G*
ABC
0.19155 0.12611 0.07604

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-121G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.053 0.779 0.000
C2 0.053 -0.779 0.000
O3 1.129 1.384 0.000
O4 -1.129 -1.384 0.000
O5 -1.129 1.330 0.000
O6 1.129 -1.330 0.000
H7 1.810 0.685 0.000
H8 -1.810 -0.685 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.56151.32842.41601.20912.41811.86602.2871
C21.56152.41601.32842.41811.20912.28711.8660
O31.32842.41603.57292.25932.71450.97603.5950
O42.41601.32843.57292.71452.25933.59500.9760
O51.20912.41812.25932.71453.49003.00972.1273
O62.41811.20912.71452.25933.49002.12733.0097
H71.86602.28710.97603.59503.00972.12733.8714
H82.28711.86603.59500.97602.12733.00973.8714

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 113.197 C1 C2 O6 121.037
C1 O3 H7 107.146 C2 C1 O3 113.197
C2 C1 O5 121.037 C2 O4 H8 107.146
O3 C1 O5 125.766 O4 C2 O6 125.766
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.241      
2 C 0.241      
3 O -0.397      
4 O -0.397      
5 O -0.307      
6 O -0.307      
7 H 0.464      
8 H 0.464      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.903 3.837 0.000
y 3.837 -43.040 0.000
z 0.000 0.000 -31.590
Traceless
 xyz
x 7.412 3.837 0.000
y 3.837 -12.294 0.000
z 0.000 0.000 4.882
Polar
3z2-r29.764
x2-y213.137
xy3.837
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.605 -0.346 0.000
y -0.346 5.035 0.000
z 0.000 0.000 2.889


<r2> (average value of r2) Å2
<r2> 108.969
(<r2>)1/2 10.439