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Experimental data for HCCl (Chloromethylene)

22 02 02 11 45
INChI INChIKey SMILES IUPAC name
InChI=1S/CHCl/c1-2/h1H LKYXEULZVGJVTG-UHFFFAOYSA-N [CH]Cl
State Conformation
1A' CS
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 319.11 1.00 kJ mol-1 2005Tar/Mil:2881
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 A' 2795   webbook       CH stretch
2 A' 1196           HCCl bend
3 A' 812           CCl stretch

vibrational zero-point energy: 2401.2 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for HCCl (Chloromethylene).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
15.75930 0.60477 0.58138 1983Kak/Sai:194

Calculated rotational constants for HCCl (Chloromethylene).
Product of moments of inertia moments of inertia
864.5729amu3Å6   3.95885527053442E-117gm3 cm6
Geometric Data
picture of Chloromethylene

Point Group Cs


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
rCH 1.119 0.036 1 3 1983Kak/Sai:194 rz
rCCl 1.696 0.003 1 2 1983Kak/Sai:194 rz
aHCCl 101.4 1.2 2 1 3 1983Kak/Sai:194

Cartesians
Atom x (Å) y (Å) z (Å)
C1 0.0457 1.1922 0.0000
Cl2 0.0457 -0.5039 0.0000
H3 -1.0510 1.4133 0.0000

Atom - Atom Distances bond lengths
Distances in Å
  C1 Cl2 H3
C1   1.69611.1188
Cl2 1.6961   2.2088
H3 1.11882.2088  

Calculated geometries for HCCl (Chloromethylene).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle
Cl2 C1 H3 101.400 Cl2 C1 H3 101.400

Bond descriptions


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

Connectivity
Atom 1 Atom 2
C1 Cl2
C1 H3
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A'
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 1A' Cs True 0.501       2012Ste/Wan:114309 μa=0.501 Cs 2 3
2 1 3A" Cs True           Cs 2 3
2 2 3Σ C∞v False           C∞v 1 1
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 HCCl (Chloromethylene).
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 1A' Cs True       Cs 2 3
2 1 3A" Cs True       Cs 2 3
2 2 3Σ C∞v False       C∞v 1 1

Calculated electric quadrupole moments for HCCl (Chloromethylene).

References
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squib reference DOI
1983Kak/Sai:194 M KAKIMOTO, S SAITO, E HIROTA "Doppler-Limited Dye Laser Excitation Spectroscopy of HCCI" J. MOL. SPECT. 97, 194-203 (1983) 10.1016/0022-2852(83)90345-4
2005Tar/Mil:2881 G Tarczay, TA Miller, G Czako, AG Csaszar "Accurate ab initio determination of spectroscopic and thermochemical properties of mono- and dichlorocarbenes" Phys. Chem. Chem. Phys. 2005, 7, 4881 and corrections 10.1039/b506790a
2012Ste/Wan:114309 TC Steimle, F Wang, X Zhuang, Z Wang "Optical Stark spectroscopy of the 2(60) A 1A" - X 1A' band of chloromethylene, HCCl" J. Chem. Phys. 136, 114309 (2012) 10.1063/1.3694245
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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