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Experimental data for C6H10 (3-Hexyne)

22 02 02 11 45
Other names
3-Hexyne; Diethylacetylene; Hex-3-yne;
INChI INChIKey SMILES IUPAC name
InChI=1S/C6H10/c1-3-5-6-4-2/h3-4H2,1-2H3 DQQNMIPXXNPGCV-UHFFFAOYSA-N CCC#CCC Hex-3-yne
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 105.39 1.92 kJ mol-1 webbook
Hfg(0K) enthalpy of formation   1.92 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 119.50   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 C6H10 (3-Hexyne).
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
0.31391 0.04696 0.04235 2004Boh:6814

Calculated rotational constants for C6H10 (3-Hexyne).
Product of moments of inertia moments of inertia
7672202amu3Å6   3.5130795846858E-113gm3 cm6
Geometric Data
picture of 3-Hexyne

Point Group


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 C6H10 (3-Hexyne).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-C 10
C-C 4
C#C 1

Connectivity
Atom 1 Atom 2
C1 C2
C1 C3
C2 C4
C3 C5
C3 H7
C3 H8
C4 C6
C4 H9
C4 H10
C5 H11
C5 H12
C5 H13
C6 H14
C6 H15
C6 H16
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A1

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
9.340 0.050     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 1A1 C2v False           C2v 1 2
1 2 1A C2 False           C2 1 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 C6H10 (3-Hexyne).
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 1A1 C2v False       C2v 1 2
1 2 1A C2 False       C2 1 3

Calculated electric quadrupole moments for C6H10 (3-Hexyne).

References
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squib reference DOI
2004Boh:6814 RK Bohn "A butane analogue, 3-Hexyne, Is Eclipsed" J. Phys. Chem. A 2004, 108, 6814-6816 10.1021/jp0476040
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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