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

using model chemistry: B1B95/6-31+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 B1B95/6-31+G**
 hartrees
Energy at 0K-378.231326
Energy at 298.15K-378.235422
HF Energy-378.231326
Nuclear repulsion energy234.656765
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 B1B95/6-31+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 3703 3542 0.00      
2 Ag 1885 1804 0.00      
3 Ag 1476 1412 0.00      
4 Ag 1227 1173 0.00      
5 Ag 844 807 0.00      
6 Ag 565 540 0.00      
7 Ag 408 390 0.00      
8 Au 708 677 218.50      
9 Au 464 444 63.52      
10 Au 127 121 7.12      
11 Bg 812 777 0.00      
12 Bg 699 669 0.00      
13 Bu 3707 3546 288.70      
14 Bu 1904 1821 538.94      
15 Bu 1349 1290 827.92      
16 Bu 1228 1174 15.05      
17 Bu 671 642 22.87      
18 Bu 263 251 56.46      

Unscaled Zero Point Vibrational Energy (zpe) 11018.7 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 10540.4 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 B1B95/6-31+G**
ABC
0.19400 0.12899 0.07748

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.050 0.767 0.000
C2 0.050 -0.767 0.000
O3 1.122 1.368 0.000
O4 -1.122 -1.368 0.000
O5 -1.122 1.317 0.000
O6 1.122 -1.317 0.000
H7 1.806 0.674 0.000
H8 -1.806 -0.674 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.53741.31682.38911.20502.39131.85812.2715
C21.53742.38911.31682.39131.20502.27151.8581
O31.31682.38913.53832.24422.68540.97453.5693
O42.38911.31683.53832.68542.24423.56930.9745
O51.20502.39132.24422.68543.46072.99762.1055
O62.39131.20502.68542.24423.46072.10552.9976
H71.85812.27150.97453.56932.99762.10553.8549
H82.27151.85813.56930.97452.10552.99763.8549

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 113.430 C1 C2 O6 120.899
C1 O3 H7 107.425 C2 C1 O3 113.430
C2 C1 O5 120.899 C2 O4 H8 107.425
O3 C1 O5 125.672 O4 C2 O6 125.672
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.497      
2 C 0.497      
3 O -0.409      
4 O -0.409      
5 O -0.472      
6 O -0.472      
7 H 0.383      
8 H 0.383      


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 -30.532 3.857 0.000
y 3.857 -43.087 0.000
z 0.000 0.000 -31.954
Traceless
 xyz
x 6.988 3.857 0.000
y 3.857 -11.844 0.000
z 0.000 0.000 4.856
Polar
3z2-r29.711
x2-y212.555
xy3.857
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.100 -0.371 0.000
y -0.371 5.566 0.000
z 0.000 0.000 3.260


<r2> (average value of r2) Å2
<r2> 134.486
(<r2>)1/2 11.597