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

using model chemistry: M06-2X/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 M06-2X/cc-pVTZ
 hartrees
Energy at 0K-378.348266
Energy at 298.15K-378.352442
HF Energy-378.348266
Nuclear repulsion energy235.072810
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 M06-2X/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 3703 3536 0.00      
2 Ag 1908 1822 0.00      
3 Ag 1485 1418 0.00      
4 Ag 1244 1188 0.00      
5 Ag 850 812 0.00      
6 Ag 573 547 0.00      
7 Ag 421 402 0.00      
8 Au 689 658 200.54      
9 Au 478 457 56.83      
10 Au 126 121 6.96      
11 Bg 855 816 0.00      
12 Bg 686 656 0.00      
13 Bu 3707 3541 313.00      
14 Bu 1920 1834 547.39      
15 Bu 1355 1294 865.70      
16 Bu 1238 1182 3.39      
17 Bu 689 658 23.99      
18 Bu 276 264 53.59      

Unscaled Zero Point Vibrational Energy (zpe) 11101.0 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 10602.5 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 M06-2X/cc-pVTZ
ABC
0.19546 0.12879 0.07764

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.053 0.769 0.000
C2 0.053 -0.769 0.000
O3 1.118 1.373 0.000
O4 -1.118 -1.373 0.000
O5 -1.118 1.313 0.000
O6 1.118 -1.313 0.000
H7 1.805 0.685 0.000
H8 -1.805 -0.685 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.54111.31712.39161.19602.38851.85942.2764
C21.54112.39161.31712.38851.19602.27641.8594
O31.31712.39163.54032.23602.68610.97233.5740
O42.39161.31713.54032.68612.23603.57400.9723
O51.19602.38852.23602.68613.44902.98912.1130
O62.38851.19602.68612.23603.44902.11302.9891
H71.85942.27640.97233.57402.98912.11303.8605
H82.27641.85943.57400.97232.11302.98913.8605

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 113.367 C1 C2 O6 121.017
C1 O3 H7 107.670 C2 C1 O3 113.367
C2 C1 O5 121.017 C2 O4 H8 107.670
O3 C1 O5 125.616 O4 C2 O6 125.616
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.279      
2 C 0.279      
3 O -0.247      
4 O -0.247      
5 O -0.315      
6 O -0.315      
7 H 0.282      
8 H 0.282      


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 -30.278 3.833 0.000
y 3.833 -42.119 0.000
z 0.000 0.000 -31.678
Traceless
 xyz
x 6.620 3.833 0.000
y 3.833 -11.141 0.000
z 0.000 0.000 4.520
Polar
3z2-r29.041
x2-y211.841
xy3.833
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.565 -0.341 0.000
y -0.341 5.218 0.000
z 0.000 0.000 3.081


<r2> (average value of r2) Å2
<r2> 133.964
(<r2>)1/2 11.574