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Experimental data for CCl2- (dichloromethylene anion)

22 02 02 11 45
INChI INChIKey SMILES IUPAC name
InChI=1S/CCl2/c2-1-3 PFBUKDPBVNJDEW-UHFFFAOYSA-N Cl[C]Cl
State Conformation
1A1 C2V
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   1.00 kJ mol-1 2005Tar/Mil:2881
Hfg(0K) enthalpy of formation 226.94 1.00 kJ mol-1 2005Tar/Mil:2881
Entropy (298.15K) entropy 265.35   J K-1 mol-1 JANAF
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 11.39   kJ mol-1 JANAF
Heat Capacity (298.15K) heat capacity 46.25   J K-1 mol-1 JANAF
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
1 A1 730   VEEL5       CCl2 s-str
2 A1 335   VEEL5       CCl2 scissors
3 B2 758   VEEL5       CCl2 a-str

vibrational zero-point energy: 911.6 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for CCl2- (dichloromethylene anion).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
1.67558 0.12385 0.11532 2002Dem/Mar:3282 derived equilibrium

Calculated rotational constants for CCl2- (dichloromethylene anion).
Product of moments of inertia moments of inertia
200181.2amu3Å6   9.1662405248925E-115gm3 cm6
Geometric Data
picture of dichloromethylene anion

Point Group C2v


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
rCCl 1.711   1 2 2002Dem/Mar:3282 re
aClCCl 109.22 2 1 3 2002Dem/Mar:3282 equilibrium

Cartesians
Atom x (Å) y (Å) z (Å)
C1 0.0000 0.0000 0.8424
Cl2 0.0000 1.3951 -0.1487
Cl3 0.0000 -1.3951 -0.1487

Atom - Atom Distances bond lengths
Distances in Å
  C1 Cl2 Cl3
C1   1.71131.7113
Cl2 1.7113   2.7902
Cl3 1.71132.7902  

Calculated geometries for CCl2- (dichloromethylene anion).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle
Cl2 C1 Cl3 109.220

Bond descriptions


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

Connectivity
Atom 1 Atom 2
C1 Cl2
C1 Cl3
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A1

Electron Affinity (eV)
Electron Affinity unc. reference
1.603 0.008 2002Rie/Tsc:231
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