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

using model chemistry: B2PLYP/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B2PLYP/aug-cc-pVTZ
 hartrees
Energy at 0K-378.250078
Energy at 298.15K-378.254192
HF Energy-377.834695
Nuclear repulsion energy233.967985
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 B2PLYP/aug-cc-pVTZ
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 3647 3505 0.00      
2 Ag 1810 1739 0.00      
3 Ag 1441 1384 0.00      
4 Ag 1226 1178 0.00      
5 Ag 824 792 0.00      
6 Ag 563 541 0.00      
7 Ag 407 391 0.00      
8 Au 711 683 178.91      
9 Au 467 448 50.85      
10 Au 124 119 6.39      
11 Bg 838 805 0.00      
12 Bg 707 680 0.00      
13 Bu 3651 3508 263.88      
14 Bu 1834 1763 456.51      
15 Bu 1335 1283 780.16      
16 Bu 1204 1157 20.96      
17 Bu 671 645 21.84      
18 Bu 261 251 51.89      

Unscaled Zero Point Vibrational Energy (zpe) 10859.7 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 10436.1 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 B2PLYP/aug-cc-pVTZ
ABC
0.19357 0.12768 0.07694

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/aug-cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.054 0.768 0.000
C2 0.054 -0.768 0.000
O3 1.123 1.377 0.000
O4 -1.123 -1.377 0.000
O5 -1.123 1.323 0.000
O6 1.123 -1.323 0.000
H7 1.805 0.681 0.000
H8 -1.805 -0.681 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.54001.32502.39681.20512.39991.86102.2732
C21.54002.39681.32502.39991.20512.27321.8610
O31.32502.39683.55372.24702.70030.97443.5791
O42.39681.32503.55372.70032.24703.57910.9744
O51.20512.39992.24702.70033.47162.99802.1172
O62.39991.20512.70032.24703.47162.11722.9980
H71.86102.27320.97443.57912.99802.11723.8588
H82.27321.86103.57910.97442.11722.99803.8588

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 113.353 C1 C2 O6 121.439
C1 O3 H7 107.073 C2 C1 O3 113.353
C2 C1 O5 121.439 C2 O4 H8 107.073
O3 C1 O5 125.209 O4 C2 O6 125.209
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.590      
2 C 0.590      
3 O -0.303      
4 O -0.303      
5 O -0.532      
6 O -0.532      
7 H 0.245      
8 H 0.245      


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 -31.045 3.753 0.000
y 3.753 -42.532 0.000
z 0.000 0.000 -32.187
Traceless
 xyz
x 6.315 3.753 0.000
y 3.753 -10.916 0.000
z 0.000 0.000 4.601
Polar
3z2-r29.203
x2-y211.487
xy3.753
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.506 -0.266 0.000
y -0.266 6.252 0.000
z 0.000 0.000 3.896


<r2> (average value of r2) Å2
<r2> 135.301
(<r2>)1/2 11.632