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Experimental data for CH3CH(SH)CH2CH3 (2-Butanethiol)

22 02 02 11 45
Other names
1-Methyl-1-propanethiol; 2-Mercaptobutane; 2-Butanethiol; 2-Butyl mercaptan; sec-Butanethiol; sec-Butyl mercaptan; sec-Butyl thioalcohol; sec-Butyl thiol; sec-C4H9SH; Secondary butylmercaptan; butane-2-thiol;
INChI INChIKey SMILES IUPAC name
InChI=1S/C4H10S/c1-3-4(2)5/h4-5H,3H2,1-2H3 LOCHFZBWPCLPAN-UHFFFAOYSA-N C[C@H](S)CC butane-2-thiol
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 -96.11 0.79 kJ mol-1 webbook
Hfg(0K) enthalpy of formation   0.79 kJ mol-1 webbook
Entropy (298.15K) entropy     J K-1 mol-1  
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity     kJ mol-1  
Heat Capacity (298.15K) heat capacity 119.70   J K-1 mol-1 TRC
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 CH3CH(SH)CH2CH3 (2-Butanethiol).
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
       

Calculated rotational constants for CH3CH(SH)CH2CH3 (2-Butanethiol).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of 2-Butanethiol

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 CH3CH(SH)CH2CH3 (2-Butanethiol).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-C 9
H-S 1
C-C 3
C-S 1

Connectivity
Atom 1 Atom 2
S1 H2
S1 C6
C3 H4
C3 H5
C3 C6
C3 H15
C6 H7
C6 C8
C8 H9
C8 H10
C8 C11
C11 H12
C11 H13
C11 H14
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
9.100       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 CH3CH(SH)CH2CH3 (2-Butanethiol).
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 CH3CH(SH)CH2CH3 (2-Butanethiol).

References
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squib reference DOI
TRC Frenkel, M; Marsh, K.N.; Wilhoit, R.C.; Kabo, G.J.; Roganov, G.N.,Thermodynamics of Organic Compounds in the Gas State,Thermodynamics Research Center, College Station, TX, 1994  
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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