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Experimental data for C6H12O (hexanal)

22 02 02 11 45
Other names
n-Hexanal; 1-hexanal; hexan-1-al; Hexaldehyde; hexanal;
INChI INChIKey SMILES IUPAC name
InChI=1S/C6H12O/c1-2-3-4-5-6-7/h6H,2-5H2,1H3 JARKCYVAAOWBJS-UHFFFAOYSA-N O=CCCCCC hexanal
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
Hfg(298.15K) enthalpy of formation -249.80 5.80 kJ mol-1 TRC
Hfg(0K) enthalpy of formation   5.80 kJ mol-1 TRC
Entropy (298.15K) entropy 422.10 4.20 J K-1 mol-1 TRC
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 31.15 0.31 kJ mol-1 TRC
Heat Capacity (298.15K) heat capacity 148.70 1.50 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 C6H12O (hexanal).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
0.32588 0.02898 0.02730 2015Sei/Fin:13-21

Calculated rotational constants for C6H12O (hexanal).
Product of moments of inertia moments of inertia
1.857814E+07amu3Å6   8.5068773714136E-113gm3 cm6
Geometric Data
picture of hexanal

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
rCO 1.208 0.005 1 2 2015Sei/Fin:13-21
rCC 1.511 0.002 2 3 2015Sei/Fin:13-21
rCC 1.596 0.012 3 4 2015Sei/Fin:13-21
rCC 1.420 0.014 4 5 2015Sei/Fin:13-21
rCC 1.533 0.004 5 6 2015Sei/Fin:13-21
CC 1.532 0.02 6 7 2015Sei/Fin:13-21
aCCO 124.58 0.29 1 2 3 2015Sei/Fin:13-21
aCCC 116.8 0.46 2 3 4 2015Sei/Fin:13-21
aCCC 112.9 0.61 3 4 5 2015Sei/Fin:13-21
aCCC 111.26 0.58 4 5 6 2015Sei/Fin:13-21
aCCC 112.8 0.16 5 6 7 2015Sei/Fin:13-21
dCCCO -3.8 7.6 1 2 3 4 2015Sei/Fin:13-21
dCCCC 178.2 4.7 2 3 4 5 2015Sei/Fin:13-21
dCCCC 179.8 3.8 3 4 5 6 2015Sei/Fin:13-21
dCCCC -179.4 4.8 4 5 6 7 2015Sei/Fin:13-21

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for C6H12O (hexanal).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
C=O 1
C-C 5
H-C 12

Connectivity
Atom 1 Atom 2
O1 C2
C2 C3
C2 H8
C3 C4
C3 H9
C3 H10
C4 C5
C4 H11
C4 H12
C5 C6
C5 H13
C5 H14
C6 C7
C6 H15
C6 H16
C7 H17
C7 H18
C7 H19
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
9.720 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 1A' Cs True 1.274 2.288   2.619 2015Sei/Fin:13-21   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 C6H12O (hexanal).
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 C6H12O (hexanal).

References
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squib reference DOI
2015Sei/Fin:13-21 NA Seifert, IA Finneran, C Perez, DP Zaleski, JL Neill, AL Steber, RD Suenram, A Lesarri, ST Shipman, BH Pate "J. Mol. Spect. 312 (2015) 13–21 10.1016/j.jms.2015.02.003
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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