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

using model chemistry: G3B3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at G3B3
 hartrees
Energy at 0K-378.147954
Energy at 298.15K-378.152397
HF Energy-378.319471
Nuclear repulsion energy233.444918
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 B3LYP/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 3574 3432 0.00      
2 Ag 1858 1784 0.00      
3 Ag 1475 1417 0.00      
4 Ag 1237 1188 0.00      
5 Ag 829 796 0.00      
6 Ag 566 544 0.00      
7 Ag 409 393 0.00      
8 Au 722 693 209.28      
9 Au 453 435 57.85      
10 Au 131 126 5.81      
11 Bg 793 761 0.00      
12 Bg 707 679 0.00      
13 Bu 3577 3435 226.27      
14 Bu 1880 1806 387.58      
15 Bu 1364 1310 857.19      
16 Bu 1226 1177 13.20      
17 Bu 669 642 22.04      
18 Bu 268 258 54.76      

Unscaled Zero Point Vibrational Energy (zpe) 10868.8 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 10437.3 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 B3LYP/6-31G*
ABC
0.19164 0.12794 0.07672

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.053 0.770 0.000
C2 0.053 -0.770 0.000
O3 1.129 1.374 0.000
O4 -1.129 -1.374 0.000
O5 -1.129 1.324 0.000
O6 1.129 -1.324 0.000
H7 1.806 0.662 0.000
H8 -1.806 -0.662 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.54311.32712.39831.21062.40421.86232.2637
C21.54312.39831.32712.40421.21062.26371.8623
O31.32712.39833.55602.25872.69740.98253.5720
O42.39831.32713.55602.69742.25873.57200.9825
O51.21062.40422.25872.69743.47993.00922.0980
O62.40421.21062.69742.25873.47992.09803.0092
H71.86232.26370.98253.57203.00922.09803.8476
H82.26371.86233.57200.98252.09803.00923.8476

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 116.775 C1 C2 O6 120.636
C1 O3 H7 107.664 C2 C1 O3 116.775
C2 C1 O5 120.636 C2 O4 H8 107.664
O3 C1 O5 122.588 O4 C2 O6 122.588
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.554      
2 C 0.554      
3 O -0.546      
4 O -0.546      
5 O -0.452      
6 O -0.452      
7 H 0.444      
8 H 0.444      


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


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


<r2> (average value of r2) Å2
<r2> 134.965
(<r2>)1/2 11.617