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Experimental data for C4H6S (Thiophene, 2,3-dihydro-)

22 02 02 11 45
Other names
2,3-Dihydrothiophene; Thiophene, 2,3-dihydro-;
INChI INChIKey SMILES IUPAC name
InChI=1S/C4H6S/c1-2-4-5-3-1/h1,3H,2,4H2 OXBLVCZKDOZZOJ-UHFFFAOYSA-N C1CC=CS1 2,3-Dihydrothiophene
State Conformation
1A C1
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 90.70   kJ mol-1 1995Dor/Gur:1351
Hfg(0K) enthalpy of formation 109.78   kJ mol-1 1995Dor/Gur:1351
Entropy (298.15K) entropy 303.53   J K-1 mol-1 1995Dor/Gur:1351
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 14.94   kJ mol-1 1995Dor/Gur:1351
Heat Capacity (298.15K) heat capacity 79.78   J K-1 mol-1 1995Dor/Gur:1351
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 3066   1995Dor/Gur:1351      
2 A 3063   1995Dor/Gur:1351      
3 A 2957   1995Dor/Gur:1351      
4 A 2939   1995Dor/Gur:1351      
5 A 2880   1995Dor/Gur:1351      
6 A 2863   1995Dor/Gur:1351      
7 A 1543   1995Dor/Gur:1351      
8 A 1463   1995Dor/Gur:1351      
9 A 1407   1995Dor/Gur:1351      
10 A 1283   1995Dor/Gur:1351      
11 A 1255   1995Dor/Gur:1351      
12 A 1197   1995Dor/Gur:1351      
13 A 1173   1995Dor/Gur:1351      
14 A 1125   1995Dor/Gur:1351      
15 A 1091   1995Dor/Gur:1351      
16 A 1077   1995Dor/Gur:1351      
17 A 1029   1995Dor/Gur:1351      
18 A 973   1995Dor/Gur:1351      
19 A 928   1995Dor/Gur:1351      
20 A 887   1995Dor/Gur:1351      
21 A 781   1995Dor/Gur:1351      
22 A 761   1995Dor/Gur:1351      
23 A 687   1995Dor/Gur:1351      
24 A 594   1995Dor/Gur:1351      
25 A 513   1995Dor/Gur:1351      
26 A 393   1995Dor/Gur:1351      
27 A            

vibrational zero-point energy: 18964.0 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for C4H6S (Thiophene, 2,3-dihydro-).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
0.22890 0.15703 0.09852 1982Dur/Lit:3849

Calculated rotational constants for C4H6S (Thiophene, 2,3-dihydro-).
Product of moments of inertia moments of inertia
1352858amu3Å6   6.19469661249E-114gm3 cm6
Geometric Data
picture of Thiophene, 2,3-dihydro-

Point Group C1


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

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for C4H6S (Thiophene, 2,3-dihydro-).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-C 6
C-C 2
C=C 1
C-S 2

Connectivity
Atom 1 Atom 2
C1 H2
C1 H3
C1 C4
C1 S11
C4 H5
C4 H6
C4 C9
C7 H8
C7 C9
C7 S11
C9 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
    8.110   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 C1 True           C1 3 5
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 C4H6S (Thiophene, 2,3-dihydro-).
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 C1 True       C1 3 5

Calculated electric quadrupole moments for C4H6S (Thiophene, 2,3-dihydro-).

References
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squib reference DOI
1982Dur/Lit:3849 Durig, J.R.; Little, T.S.; Li, Y.S. "Spectra and strucutre of small ring compounds. XLIII. Microwave spectrum of 2,3-dihdrothiophene." Journal of Chemical Physics. 76, 3849-3853 (1982) 10.1063/1.443525
1995Dor/Gur:1351 Dorofeeva and Gurvich. Ideal Gas Thermodynamic Properties of Sulphur Heterocyclic Compounds. J. Phys. Chem. Ref. Data. Vol. 24. #3. pgs. 1351-1376. 10.1063/1.555962
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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