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

using model chemistry: B3PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B3PW91/6-311G**
 hartrees
Energy at 0K-378.291416
Energy at 298.15K-378.295554
HF Energy-378.291416
Nuclear repulsion energy234.762558
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 B3PW91/6-311G**
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 3658 3523 0.00      
2 Ag 1863 1794 0.00      
3 Ag 1463 1409 0.00      
4 Ag 1230 1185 0.00      
5 Ag 838 807 0.00      
6 Ag 570 549 0.00      
7 Ag 406 391 0.00      
8 Au 719 692 202.32      
9 Au 463 446 54.44      
10 Au 132 127 5.92      
11 Bg 831 800 0.00      
12 Bg 714 688 0.00      
13 Bu 3662 3527 270.54      
14 Bu 1883 1813 467.14      
15 Bu 1353 1303 834.61      
16 Bu 1220 1175 10.58      
17 Bu 679 654 23.71      
18 Bu 261 252 59.05      

Unscaled Zero Point Vibrational Energy (zpe) 10971.1 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 10566.3 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 B3PW91/6-311G**
ABC
0.19398 0.12912 0.07752

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.053 0.768 0.000
C2 0.053 -0.768 0.000
O3 1.122 1.367 0.000
O4 -1.122 -1.367 0.000
O5 -1.122 1.317 0.000
O6 1.122 -1.317 0.000
H7 1.791 0.657 0.000
H8 -1.791 -0.657 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.54041.31932.38831.20192.39401.84702.2476
C21.54042.38831.31932.39401.20192.24761.8470
O31.31932.38833.53782.24542.68420.97483.5475
O42.38831.31933.53782.68422.24543.54750.9748
O51.20192.39402.24542.68423.46102.98682.0845
O62.39401.20192.68422.24543.46102.08452.9868
H71.84702.24760.97483.54752.98682.08453.8149
H82.24761.84703.54750.97482.08452.98683.8149

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 113.039 C1 C2 O6 121.117
C1 O3 H7 106.278 C2 C1 O3 113.039
C2 C1 O5 121.117 C2 O4 H8 106.278
O3 C1 O5 125.844 O4 C2 O6 125.844
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.324      
2 C 0.324      
3 O -0.266      
4 O -0.266      
5 O -0.334      
6 O -0.334      
7 H 0.276      
8 H 0.276      


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 -30.282 3.649 0.000
y 3.649 -42.040 0.000
z 0.000 0.000 -31.301
Traceless
 xyz
x 6.388 3.649 0.000
y 3.649 -11.248 0.000
z 0.000 0.000 4.860
Polar
3z2-r29.719
x2-y211.757
xy3.649
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.365 -0.287 0.000
y -0.287 4.749 0.000
z 0.000 0.000 2.558


<r2> (average value of r2) Å2
<r2> 133.946
(<r2>)1/2 11.574