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

using model chemistry: wB97X-D/6-31G**

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/6-31G**
 hartrees
Energy at 0K-378.215190
Energy at 298.15K-378.219339
HF Energy-378.215190
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/6-31G**
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 3742 3742 0.00      
2 Ag 1914 1914 0.00      
3 Ag 1506 1506 0.00      
4 Ag 1261 1261 0.00      
5 Ag 849 849 0.00      
6 Ag 574 574 0.00      
7 Ag 421 421 0.00      
8 Au 719 719 218.73      
9 Au 458 458 60.04      
10 Au 128 128 6.34      
11 Bg 801 801 0.00      
12 Bg 709 709 0.00      
13 Bu 3746 3746 266.83      
14 Bu 1929 1929 447.11      
15 Bu 1381 1381 882.49      
16 Bu 1255 1255 8.24      
17 Bu 683 683 23.34      
18 Bu 281 281 54.59      

Unscaled Zero Point Vibrational Energy (zpe) 11177.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11177.5 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/6-31G**
ABC
0.19355 0.12881 0.07734

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.050 0.769 0.000
C2 0.050 -0.769 0.000
O3 1.123 1.368 0.000
O4 -1.123 -1.368 0.000
O5 -1.123 1.319 0.000
O6 1.123 -1.319 0.000
H7 1.799 0.667 0.000
H8 -1.799 -0.667 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.54141.31792.39161.20582.39521.85262.2632
C21.54142.39161.31792.39521.20582.26321.8526
O31.31792.39163.54082.24752.68710.97403.5618
O42.39161.31793.54082.68712.24753.56180.9740
O51.20582.39522.24752.68713.46502.99472.0978
O62.39521.20582.68712.24753.46502.09782.9947
H71.85262.26320.97403.56182.99472.09783.8383
H82.26321.85263.56180.97402.09782.99473.8383

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 113.300 C1 C2 O6 120.870
C1 O3 H7 106.909 C2 C1 O3 113.300
C2 C1 O5 120.870 C2 O4 H8 106.909
O3 C1 O5 125.830 O4 C2 O6 125.830
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.573      
2 C 0.573      
3 O -0.478      
4 O -0.478      
5 O -0.465      
6 O -0.465      
7 H 0.370      
8 H 0.370      


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 -29.704 3.723 0.000
y 3.723 -41.800 0.000
z 0.000 0.000 -31.054
Traceless
 xyz
x 6.723 3.723 0.000
y 3.723 -11.421 0.000
z 0.000 0.000 4.698
Polar
3z2-r29.396
x2-y212.096
xy3.723
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.185 -0.299 0.000
y -0.299 4.505 0.000
z 0.000 0.000 2.346


<r2> (average value of r2) Å2
<r2> 134.020
(<r2>)1/2 11.577