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

using model chemistry: BLYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at BLYP/6-31+G**
 hartrees
Energy at 0K-378.297814
Energy at 298.15K-378.301689
HF Energy-378.297814
Nuclear repulsion energy230.395384
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 BLYP/6-31+G**
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 3485 3467 0.00      
2 Ag 1735 1726 0.00      
3 Ag 1360 1352 0.00      
4 Ag 1157 1151 0.00      
5 Ag 775 770 0.00      
6 Ag 533 530 0.00      
7 Ag 384 382 0.00      
8 Au 682 678 192.65      
9 Au 434 432 56.92      
10 Au 117 117 6.75      
11 Bg 769 765 0.00      
12 Bg 669 665 0.00      
13 Bu 3487 3468 207.70      
14 Bu 1765 1755 419.16      
15 Bu 1273 1266 749.72      
16 Bu 1143 1137 35.16      
17 Bu 634 631 19.71      
18 Bu 246 245 53.39      

Unscaled Zero Point Vibrational Energy (zpe) 10322.6 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 10267.8 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 BLYP/6-31+G**
ABC
0.18822 0.12354 0.07459

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.054 0.778 0.000
C2 0.054 -0.778 0.000
O3 1.139 1.401 0.000
O4 -1.139 -1.401 0.000
O5 -1.139 1.346 0.000
O6 1.139 -1.346 0.000
H7 1.834 0.696 0.000
H8 -1.834 -0.696 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.55951.34602.43361.22412.43581.89062.3109
C21.55952.43361.34602.43581.22412.31091.8906
O31.34602.43363.61052.27842.74630.99023.6382
O42.43361.34603.61052.74632.27843.63820.9902
O51.22412.43582.27842.74633.52573.04352.1567
O62.43581.22412.74632.27843.52572.15673.0435
H71.89062.31090.99023.63823.04352.15673.9240
H82.31091.89063.63820.99022.15673.04353.9240

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 113.562 C1 C2 O6 121.632
C1 O3 H7 107.060 C2 C1 O3 113.562
C2 C1 O5 121.632 C2 O4 H8 107.060
O3 C1 O5 124.806 O4 C2 O6 124.806
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.464      
2 C 0.464      
3 O -0.374      
4 O -0.374      
5 O -0.456      
6 O -0.456      
7 H 0.366      
8 H 0.366      


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 -31.113 3.892 0.000
y 3.892 -43.743 0.000
z 0.000 0.000 -32.579
Traceless
 xyz
x 7.048 3.892 0.000
y 3.892 -11.897 0.000
z 0.000 0.000 4.849
Polar
3z2-r29.698
x2-y212.630
xy3.892
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.790 -0.283 0.000
y -0.283 6.326 0.000
z 0.000 0.000 3.552


<r2> (average value of r2) Å2
<r2> 139.228
(<r2>)1/2 11.800