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: CCSD/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 CCSD/TZVP
 hartrees
Energy at 0K-1145.479972
Energy at 298.15K 
HF Energy-1144.524188
Nuclear repulsion energy325.361275
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 CCSD/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 1866 1781 0.00      
2 Ag 1114 1063 0.00      
3 Ag 632 603 0.00      
4 Ag 441 421 0.00      
5 Ag 291 277 0.00      
6 Au 385 368 18.65      
7 Au 21i 20i 0.82      
8 Bg 713 681 0.00      
9 Bu 1886 1800 380.13      
10 Bu 789 753 473.24      
11 Bu 509 485 6.29      
12 Bu 209 199 3.68      

Unscaled Zero Point Vibrational Energy (zpe) 4407.0 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 4206.0 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 CCSD/TZVP
ABC
0.16574 0.04934 0.03802

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.169 0.758 0.000
C2 0.169 -0.758 0.000
O3 -1.271 1.189 0.000
O4 1.271 -1.189 0.000
Cl5 1.271 1.770 0.000
Cl6 -1.271 -1.770 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 Cl5 Cl6
C11.55261.18322.42121.76002.7572
C21.55262.42121.18322.75721.7600
O31.18322.42123.48052.60712.9587
O42.42121.18323.48052.95872.6071
Cl51.76002.75722.60712.95874.3576
Cl62.75721.76002.95872.60714.3576

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 123.952 C1 C2 Cl6 112.530
C2 C1 O3 123.952 C2 C1 Cl5 112.530
O3 C1 Cl5 123.518 O4 C2 Cl6 123.518
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability