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Experimental data for C7H16 (2-methylhexane)

22 02 02 11 45
Other names
Isoheptane;
INChI INChIKey SMILES IUPAC name
InChI=1S/C7H16/c1-4-5-6-7(2)3/h7H,4-6H2,1-3H3 GXDHCNNESPLIKD-UHFFFAOYSA-N CC(C)CCCC 2-methylhexane
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 -195.00 1.30 kJ mol-1 webbook
Hfg(0K) enthalpy of formation   1.30 kJ mol-1 webbook
Entropy (298.15K) entropy 419.99   J K-1 mol-1 webbook
Heat Capacity (298.15K) heat capacity 164.50 0.20 J K-1 mol-1 webbook
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 C7H16 (2-methylhexane).
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 C7H16 (2-methylhexane).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of 2-methylhexane

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 C7H16 (2-methylhexane).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
C-C 6
H-C 16

Connectivity
Atom 1 Atom 2
C1 C2
C1 H8
C1 H9
C1 H10
C2 C3
C2 C7
C2 H11
C3 C4
C3 H12
C3 H13
C4 C5
C4 H14
C4 H15
C5 C6
C5 H16
C5 H17
C6 H18
C6 H19
C6 H20
C7 H21
C7 H22
C7 H23
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
9.930 0.100     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 C7H16 (2-methylhexane).
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 C7H16 (2-methylhexane).

References
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squib reference DOI
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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