return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for ClCOClCO (Oxalyl chloride)

using model chemistry: PBEPBEultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-1146.407465
Energy at 298.15K-1146.407776
HF Energy-1146.407465
Nuclear repulsion energy322.861204
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 PBEPBEultrafine/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 1811 1781 0.00      
2 Ag 1010 994 0.00      
3 Ag 596 586 0.00      
4 Ag 407 401 0.00      
5 Ag 279 274 0.00      
6 Au 368 362 15.10      
7 Au 29 29 0.46      
8 Bg 693 681 0.00      
9 Bu 1839 1809 375.93      
10 Bu 736 724 495.05      
11 Bu 470 462 10.54      
12 Bu 200 197 3.42      

Unscaled Zero Point Vibrational Energy (zpe) 4218.7 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 4149.1 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 PBEPBEultrafine/6-31G*
ABC
0.16042 0.04917 0.03764

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.178 0.759 0.000
C2 0.178 -0.759 0.000
O3 -1.290 1.203 0.000
O4 1.290 -1.203 0.000
Cl5 1.290 1.763 0.000
Cl6 -1.290 -1.763 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 Cl5 Cl6
C11.55951.19772.45081.77862.7563
C21.55952.45081.19772.75631.7786
O31.19772.45083.52842.64092.9656
O42.45081.19773.52842.96562.6409
Cl51.77862.75632.64092.96564.3690
Cl62.75631.77862.96562.64094.3690

picture of Oxalyl chloride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O4 124.947 C1 C2 Cl6 111.150
C2 C1 O3 124.947 C2 C1 Cl5 111.150
O3 C1 Cl5 123.903 O4 C2 Cl6 123.903
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.204      
2 C 0.204      
3 O -0.269      
4 O -0.269      
5 Cl 0.065      
6 Cl 0.065      


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 -48.404 3.041 0.000
y 3.041 -47.927 0.000
z 0.000 0.000 -44.139
Traceless
 xyz
x -2.371 3.041 0.000
y 3.041 -1.655 0.000
z 0.000 0.000 4.026
Polar
3z2-r28.053
x2-y2-0.477
xy3.041
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.619 2.535 0.000
y 2.535 8.318 0.000
z 0.000 0.000 3.300


<r2> (average value of r2) Å2
<r2> 248.593
(<r2>)1/2 15.767