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

using model chemistry: B3LYPultrafine/aug-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 B3LYPultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-378.395842
Energy at 298.15K-378.399926
HF Energy-378.395842
Nuclear repulsion energy233.201443
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 B3LYPultrafine/aug-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 3629 3522 0.00      
2 Ag 1818 1764 0.00      
3 Ag 1439 1396 0.00      
4 Ag 1219 1183 0.00      
5 Ag 822 798 0.00      
6 Ag 558 542 0.00      
7 Ag 400 388 0.00      
8 Au 707 686 177.59      
9 Au 463 450 53.76      
10 Au 125 121 6.58      
11 Bg 833 808 0.00      
12 Bg 703 682 0.00      
13 Bu 3632 3525 248.43      
14 Bu 1840 1785 477.51      
15 Bu 1335 1295 787.47      
16 Bu 1197 1162 16.31      
17 Bu 665 645 20.90      
18 Bu 253 246 53.15      

Unscaled Zero Point Vibrational Energy (zpe) 10818.6 cm-1
Scaled (by 0.9704) Zero Point Vibrational Energy (zpe) 10498.4 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 B3LYPultrafine/aug-cc-pVDZ
ABC
0.19264 0.12667 0.07642

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/aug-cc-pVDZ

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 1.126 1.384 0.000
O4 -1.126 -1.384 0.000
O5 -1.126 1.327 0.000
O6 1.126 -1.327 0.000
H7 1.815 0.690 0.000
H8 -1.815 -0.690 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.54371.32882.40661.20902.40541.86952.2889
C21.54372.40661.32882.40541.20902.28891.8695
O31.32882.40663.56822.25232.71100.97793.5989
O42.40661.32883.56822.71102.25233.59890.9779
O51.20902.40542.25232.71103.48033.00902.1318
O62.40541.20902.71102.25233.48032.13183.0090
H71.86952.28890.97793.59893.00902.13183.8840
H82.28891.86953.59890.97792.13183.00903.8840

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 113.609 C1 C2 O6 121.337
C1 O3 H7 107.299 C2 C1 O3 113.609
C2 C1 O5 121.337 C2 O4 H8 107.299
O3 C1 O5 125.054 O4 C2 O6 125.054
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.672      
2 C 0.672      
3 O -0.388      
4 O -0.388      
5 O -0.457      
6 O -0.457      
7 H 0.173      
8 H 0.173      


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 -31.098 3.958 0.000
y 3.958 -42.641 0.000
z 0.000 0.000 -32.145
Traceless
 xyz
x 6.295 3.958 0.000
y 3.958 -11.019 0.000
z 0.000 0.000 4.724
Polar
3z2-r29.448
x2-y211.543
xy3.958
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.493 -0.275 0.000
y -0.275 6.264 0.000
z 0.000 0.000 3.837


<r2> (average value of r2) Å2
<r2> 136.116
(<r2>)1/2 11.667