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Experimental data for CH2CClCHCH2 (1,3-Butadiene, 2-chloro-)

22 02 02 11 45
Other names
Chloroprene; 2-Chloro-1,3-butadiene; 2-Chlorobutadiene; 2-Chlorobuta-1,3-diene; β-Chloroprene;
INChI INChIKey SMILES IUPAC name
InChI=1S/C4H5Cl/c1-3-4(2)5/h3H,1-2H2 YACLQRRMGMJLJV-UHFFFAOYSA-N C=C(Cl)C=C
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
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' 3116   1978Pan/Gri:17-27      
2 A' 3102   1978Pan/Gri:17-27      
3 A' 3050          
4 A' 3030          
5 A' 3017          
6 A' 1635          
7 A' 1587          
8 A' 1410          
9 A' 1370          
10 A' 1290          
11 A' 1220          
12 A' 1025          
13 A' 884          
14 A' 635          
15 A' 515          
16 A' 388          
17 A' 260          
18 A" 977          
19 A" 931          
20 A" 926          
21 A" 736          
22 A"            
23 A" 407          
24 A" 144          

vibrational zero-point energy: 15827.5 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for CH2CClCHCH2 (1,3-Butadiene, 2-chloro-).
Gas-phase IR spectra can be found in the NIST Chemistry Webbook here.
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
0.18142 0.12486 0.07393 1979Kar/Smi:483

Calculated rotational constants for CH2CClCHCH2 (1,3-Butadiene, 2-chloro-).
Product of moments of inertia moments of inertia
2860762amu3Å6   1.3099346807178E-113gm3 cm6
Geometric Data
picture of 1,3-Butadiene, 2-chloro-

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
rCC 1.344 0.002 1 2 1998Kuc
rCC 1.344 0.002 3 4 1998Kuc
rCC 1.469 0.003 2 3 1998Kuc
rCCl 1.742 0.002 2 5 1998Kuc
rCH 1.098 0.002 1 7
aCCC 123.5 0.1 1 2 3 1998Kuc
aCCC 125.6 0.2 2 3 4 1998Kuc
aCCCl 117.2 0.2 3 2 5 1998Kuc

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for CH2CClCHCH2 (1,3-Butadiene, 2-chloro-).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-C 5
C-C 1
C=C 2
C-Cl 1

Connectivity
Atom 1 Atom 2
C1 C2
C1 H6
C1 H7
C2 C3
C2 Cl5
C3 C4
C3 H8
C4 H9
C4 H10
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A'

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
8.830 0.010     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 1A' Cs True           Cs 2 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 CH2CClCHCH2 (1,3-Butadiene, 2-chloro-).
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

Calculated electric quadrupole moments for CH2CClCHCH2 (1,3-Butadiene, 2-chloro-).

References
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squib reference DOI
1978Pan/Gri:17-27 YN Panchenko, OE Grikina, VL Mochalov, YA Pentin, NF Stepanov, R Aroca, J Mink, AN Akopyan, AV Rodin, VK Matveev "VIBRATIONAL SPECTRA AND CONFORMATIONAL ANALYSIS OF FIVE CHLOROSUBSTITUTED BUTA-1,3-DIENES" J. Mol. Struct., 49 (1978) 17-27 10.1016/0022-2860(78)87003-3
1979Kar/Smi:483 F Karlsson, Z Smith "Microwave Spectrum of 2-Chloro-1,3-butadiene." Acta Chem. Scand. 33a (1979) 483 10.3891/acta.chem.scand.33a-0483
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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