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Experimental data for ClCOClCO (Oxalyl chloride)

22 02 02 11 45
Other names
Ethanedioyl dichloride; Ethanedioyl chloride; Oxalic acid dichloride; Oxalic dichloride; Oxaloyl chloride; Oxalyl dichloride;
INChI INChIKey SMILES IUPAC name
InChI=1S/C2Cl2O2/c3-1(5)2(4)6 CTSLXHKWHWQRSH-UHFFFAOYSA-N O=C(Cl)C(Cl)=O
State Conformation
1AG C2H
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Hfg(298.15K) enthalpy of formation -335.80 6.30 kJ mol-1 webbook
Hfg(0K) enthalpy of formation   6.30 kJ mol-1 webbook
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference

Calculated vibrational frequencies for ClCOClCO (Oxalyl chloride).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment

Calculated rotational constants for ClCOClCO (Oxalyl chloride).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of Oxalyl chloride

Point Group C2h


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4
rCO 1.182 0.002 1 3 1998Kuc
rCC 1.534 0.005 1 2 1998Kuc
rCCl 1.744 0.002 1 5 1998Kuc
aCCO 124.2 0.3 2 1 3 1998Kuc
aCCCl 111.7 0.2 1 2 6 1998Kuc

Cartesians
Atom x (Å) y (Å) z (Å)
C1 -0.1691 0.7481 0.0000
C2 0.1691 -0.7481 0.0000
O3 -1.2692 1.1806 0.0000
O4 1.2692 -1.1806 0.0000
Cl5 1.2692 1.7344 0.0000
Cl6 -1.2692 -1.7344 0.0000

Atom - Atom Distances bond lengths
Distances in Å
  C1 C2 O3 O4 Cl5 Cl6
C1   1.53401.18202.40601.74402.7153
C2 1.5340   2.40601.18202.71531.7440
O3 1.18202.4060   3.46672.59812.9150
O4 2.40601.18203.4667   2.91502.5981
Cl5 1.74402.71532.59812.9150   4.2984
Cl6 2.71531.74402.91502.59814.2984  

Calculated geometries for ClCOClCO (Oxalyl chloride).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
C1 C2 O4 124.200 C1 C2 Cl6 111.700
C2 C1 O3 124.200 C2 C1 Cl5 111.700
O3 C1 Cl5 124.100 O4 C2 Cl6 124.100

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
C-C 1
C=O 2
C-Cl 2

Connectivity
Atom 1 Atom 2
C1 C2
C1 O3
C1 Cl5
C2 O4
C2 Cl6
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1AG

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
10.910 0.050     webbook
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 1AG C2h True           C2h 0 3
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for ClCOClCO (Oxalyl chloride).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 1AG C2h True       C2h 0 3

Calculated electric quadrupole moments for ClCOClCO (Oxalyl chloride).

References
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squib reference DOI
1998Kuc K Kuchitsu(ed) "Structure of Free Polyatomic Molecules - Basic Data" Springer, Berlin, 1998 10.1007/978-3-642-45748-7 
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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