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

using model chemistry: B2PLYP/TZVP

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/TZVP
 hartrees
Energy at 0K-378.170774
Energy at 298.15K-378.174811
HF Energy-377.818216
Nuclear repulsion energy233.716835
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/TZVP
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 3665 3498 0.00      
2 Ag 1820 1737 0.00      
3 Ag 1436 1370 0.00      
4 Ag 1218 1163 0.00      
5 Ag 821 784 0.00      
6 Ag 563 537 0.00      
7 Ag 405 386 0.00      
8 Au 685 654 213.39      
9 Au 451 431 64.13      
10 Au 115 110 5.97      
11 Bg 813 776 0.00      
12 Bg 675 644 0.00      
13 Bu 3668 3501 267.76      
14 Bu 1840 1756 447.20      
15 Bu 1331 1271 784.86      
16 Bu 1198 1144 21.14      
17 Bu 674 643 22.63      
18 Bu 258 246 54.95      

Unscaled Zero Point Vibrational Energy (zpe) 10817.3 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 10324.1 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/TZVP
ABC
0.19337 0.12720 0.07673

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/TZVP

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.053 0.771 0.000
C2 0.053 -0.771 0.000
O3 1.124 1.381 0.000
O4 -1.124 -1.381 0.000
O5 -1.124 1.324 0.000
O6 1.124 -1.324 0.000
H7 1.808 0.686 0.000
H8 -1.808 -0.686 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.54511.32582.40281.20492.40281.86312.2803
C21.54512.40281.32582.40281.20492.28031.8631
O31.32582.40283.56022.24832.70450.97473.5868
O42.40281.32583.56022.70452.24833.58680.9747
O51.20492.40282.24832.70453.47323.00022.1232
O62.40281.20492.70452.24833.47322.12323.0002
H71.86312.28030.97473.58683.00022.12323.8672
H82.28031.86313.58680.97472.12323.00023.8672

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 113.418 C1 C2 O6 121.303
C1 O3 H7 107.179 C2 C1 O3 113.418
C2 C1 O5 121.303 C2 O4 H8 107.179
O3 C1 O5 125.279 O4 C2 O6 125.279
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.221      
2 C 0.221      
3 O -0.222      
4 O -0.222      
5 O -0.305      
6 O -0.305      
7 H 0.305      
8 H 0.305      


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 -30.968 3.686 0.000
y 3.686 -43.646 0.000
z 0.000 0.000 -32.063
Traceless
 xyz
x 6.887 3.686 0.000
y 3.686 -12.131 0.000
z 0.000 0.000 5.245
Polar
3z2-r210.489
x2-y212.679
xy3.686
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.007 -0.350 0.000
y -0.350 5.290 0.000
z 0.000 0.000 3.049


<r2> (average value of r2) Å2
<r2> 135.801
(<r2>)1/2 11.653