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: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-1139.668003
Energy at 298.15K-1139.668490
HF Energy-1138.951047
Nuclear repulsion energy321.709009
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 MP2/3-21G*
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 1648 1568 0.00      
2 Ag 969 922 0.00      
3 Ag 588 559 0.00      
4 Ag 408 388 0.00      
5 Ag 294 280 0.00      
6 Au 420 400 16.15      
7 Au 66 63 0.02      
8 Bg 752 716 0.00      
9 Bu 1678 1596 232.29      
10 Bu 719 684 513.83      
11 Bu 470 447 26.88      
12 Bu 214 203 9.28      

Unscaled Zero Point Vibrational Energy (zpe) 4112.0 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 3911.8 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 MP2/3-21G*
ABC
0.15553 0.04973 0.03768

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.179 0.755 0.000
C2 0.179 -0.755 0.000
O3 -1.311 1.213 0.000
O4 1.311 -1.213 0.000
Cl5 1.311 1.735 0.000
Cl6 -1.311 -1.735 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 Cl5 Cl6
C11.55271.22112.46931.78372.7358
C21.55272.46931.22112.73581.7837
O31.22112.46933.57302.67372.9488
O42.46931.22113.57302.94882.6737
Cl51.78372.73582.67372.94884.3499
Cl62.73581.78372.94882.67374.3499

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 125.386 C1 C2 Cl6 109.976
C2 C1 O3 125.386 C2 C1 Cl5 109.976
O3 C1 Cl5 124.639 O4 C2 Cl6 124.639
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability