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

using model chemistry: LSDA/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at LSDA/6-31G*
 hartrees
Energy at 0K-376.434348
Energy at 298.15K-376.438523
HF Energy-376.434348
Nuclear repulsion energy235.680804
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 LSDA/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 3292 3231 0.00      
2 Ag 1840 1805 0.00      
3 Ag 1495 1467 0.00      
4 Ag 1225 1202 0.00      
5 Ag 847 831 0.00      
6 Ag 576 566 0.00      
7 Ag 398 391 0.00      
8 Au 817 802 194.40      
9 Au 436 428 38.77      
10 Au 156 153 4.11      
11 Bg 821 805 0.00      
12 Bg 761 747 0.00      
13 Bu 3304 3242 320.73      
14 Bu 1884 1849 335.00      
15 Bu 1373 1347 802.25      
16 Bu 1250 1227 27.33      
17 Bu 656 643 19.53      
18 Bu 273 268 69.05      

Unscaled Zero Point Vibrational Energy (zpe) 10701.6 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 10501.4 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 LSDA/6-31G*
ABC
0.19029 0.13454 0.07882

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.048 0.759 0.000
C2 0.048 -0.759 0.000
O3 1.134 1.327 0.000
O4 -1.134 -1.327 0.000
O5 -1.134 1.305 0.000
O6 1.134 -1.305 0.000
H7 1.766 0.546 0.000
H8 -1.766 -0.546 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.52101.31192.35151.21562.37881.82682.1573
C21.52102.35151.31192.37881.21562.15731.8268
O31.31192.35153.49122.26902.63161.00413.4526
O42.35151.31193.49122.63162.26903.45261.0041
O51.21562.37882.26902.63163.45822.99821.9558
O62.37881.21562.63162.26903.45821.95582.9982
H71.82682.15731.00413.45262.99821.95583.6972
H82.15731.82683.45261.00411.95582.99823.6972

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 111.998 C1 C2 O6 120.329
C1 O3 H7 103.340 C2 C1 O3 111.998
C2 C1 O5 120.329 C2 O4 H8 103.340
O3 C1 O5 127.674 O4 C2 O6 127.674
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.462      
2 C 0.462      
3 O -0.497      
4 O -0.497      
5 O -0.409      
6 O -0.409      
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
Primitive
 xyz
x -30.245 3.039 0.000
y 3.039 -41.083 0.000
z 0.000 0.000 -31.329
Traceless
 xyz
x 5.961 3.039 0.000
y 3.039 -10.296 0.000
z 0.000 0.000 4.335
Polar
3z2-r28.671
x2-y210.838
xy3.039
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.434 -0.151 0.000
y -0.151 4.787 0.000
z 0.000 0.000 2.346


<r2> (average value of r2) Å2
<r2> 131.738
(<r2>)1/2 11.478