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

using model chemistry: wB97X-D/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-378.230863
Energy at 298.15K-378.234925
HF Energy-378.230863
Nuclear repulsion energy234.049738
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/cc-pVDZ
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 3743 3566 0.00      
2 Ag 1893 1803 0.00      
3 Ag 1477 1407 0.00      
4 Ag 1227 1168 0.00      
5 Ag 839 799 0.00      
6 Ag 566 539 0.00      
7 Ag 397 378 0.00      
8 Au 702 669 225.06      
9 Au 465 443 67.24      
10 Au 122 116 7.26      
11 Bg 811 773 0.00      
12 Bg 693 660 0.00      
13 Bu 3747 3569 285.96      
14 Bu 1907 1817 562.14      
15 Bu 1349 1285 836.01      
16 Bu 1228 1170 13.30      
17 Bu 675 643 23.25      
18 Bu 242 231 59.49      

Unscaled Zero Point Vibrational Energy (zpe) 11041.1 cm-1
Scaled (by 0.9526) Zero Point Vibrational Energy (zpe) 10517.8 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 wB97X-D/cc-pVDZ
ABC
0.19403 0.12754 0.07696

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.051 0.774 0.000
C2 0.051 -0.774 0.000
O3 1.119 1.379 0.000
O4 -1.119 -1.379 0.000
O5 -1.119 1.330 0.000
O6 1.119 -1.330 0.000
H7 1.820 0.707 0.000
H8 -1.820 -0.707 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.55221.31802.40411.20382.40811.87232.3064
C21.55222.40411.31802.40811.20382.30641.8723
O31.31802.40413.55312.23952.70940.97113.6041
O42.40411.31803.55312.70942.23953.60410.9711
O51.20382.40812.23952.70943.47673.00442.1535
O62.40811.20382.70942.23953.47672.15353.0044
H71.87232.30640.97113.60413.00442.15353.9039
H82.30641.87233.60410.97112.15353.00443.9039

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 113.526 C1 C2 O6 121.283
C1 O3 H7 108.808 C2 C1 O3 113.526
C2 C1 O5 121.283 C2 O4 H8 108.808
O3 C1 O5 125.190 O4 C2 O6 125.190
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.507      
2 C 0.507      
3 O -0.417      
4 O -0.417      
5 O -0.477      
6 O -0.477      
7 H 0.388      
8 H 0.388      


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 -30.494 4.050 0.000
y 4.050 -43.401 0.000
z 0.000 0.000 -31.987
Traceless
 xyz
x 7.200 4.050 0.000
y 4.050 -12.160 0.000
z 0.000 0.000 4.960
Polar
3z2-r29.921
x2-y212.907
xy4.050
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.092 -0.275 0.000
y -0.275 4.520 0.000
z 0.000 0.000 2.355


<r2> (average value of r2) Å2
<r2> 135.349
(<r2>)1/2 11.634