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

using model chemistry: B3LYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B3LYP/6-31+G**
 hartrees
Energy at 0K-378.350966
Energy at 298.15K-378.355001
HF Energy-378.350966
Nuclear repulsion energy233.027121
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 B3LYP/6-31+G**
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 3655 3524 0.00      
2 Ag 1836 1770 0.00      
3 Ag 1437 1386 0.00      
4 Ag 1213 1170 0.00      
5 Ag 822 792 0.00      
6 Ag 558 538 0.00      
7 Ag 404 390 0.00      
8 Au 691 667 215.06      
9 Au 460 443 65.49      
10 Au 121 117 7.25      
11 Bg 805 776 0.00      
12 Bg 681 657 0.00      
13 Bu 3658 3527 260.05      
14 Bu 1856 1790 504.84      
15 Bu 1324 1277 837.84      
16 Bu 1206 1163 5.24      
17 Bu 665 642 21.83      
18 Bu 259 250 55.04      

Unscaled Zero Point Vibrational Energy (zpe) 10825.2 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 10437.7 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 B3LYP/6-31+G**
ABC
0.19235 0.12648 0.07631

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.051 0.772 0.000
C2 0.051 -0.772 0.000
O3 1.126 1.384 0.000
O4 -1.126 -1.384 0.000
O5 -1.126 1.328 0.000
O6 1.126 -1.328 0.000
H7 1.823 0.698 0.000
H8 -1.823 -0.698 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.54701.32732.40931.21052.40741.87602.3021
C21.54702.40931.32732.40741.21052.30211.8760
O31.32732.40933.56922.25342.71220.97833.6104
O42.40931.32733.56922.71222.25343.61040.9783
O51.21052.40742.25342.71223.48263.01622.1423
O62.40741.21052.71222.25343.48262.14233.0162
H71.87602.30210.97833.61043.01622.14233.9045
H82.30211.87603.61040.97832.14233.01623.9045

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 113.680 C1 C2 O6 121.151
C1 O3 H7 107.955 C2 C1 O3 113.680
C2 C1 O5 121.151 C2 O4 H8 107.955
O3 C1 O5 125.168 O4 C2 O6 125.168
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.511      
2 C 0.511      
3 O -0.412      
4 O -0.412      
5 O -0.479      
6 O -0.479      
7 H 0.380      
8 H 0.380      


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 -30.811 3.996 0.000
y 3.996 -43.651 0.000
z 0.000 0.000 -32.235
Traceless
 xyz
x 7.132 3.996 0.000
y 3.996 -12.129 0.000
z 0.000 0.000 4.996
Polar
3z2-r29.993
x2-y212.841
xy3.996
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.294 -0.359 0.000
y -0.359 5.776 0.000
z 0.000 0.000 3.366


<r2> (average value of r2) Å2
<r2> 136.489
(<r2>)1/2 11.683