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Experimental data for C4H10O (1-Propanol, 2-methyl-)

22 02 02 11 45
Other names
1-Propanol, 2-methyl-; 1-Hydroxymethylpropane; 2-Methyl-1-propanol; 2-Methylpropan-1-ol; 2-Methylpropanol; 2-Methylpropanol-1; 2-Methylpropyl alcohol; Alcool isobutylique; Butanol-iso; Fermentation butyl alcohol; Isobutanol; Isobutyl alcohol; Isobutylalkohol; iso-C4H9OH; Isopropylcarbinol;
INChI INChIKey SMILES IUPAC name
InChI=1S/C4H10O/c1-4(2)3-5/h4-5H,3H2,1-2H3 ZXEKIIBDNHEJCQ-UHFFFAOYSA-N CC(C)CO 2-Methylpropan-1-ol
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 -283.80 0.90 kJ mol-1 webbook
Hfg(0K) enthalpy of formation   0.90 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  
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 C4H10O (1-Propanol, 2-methyl-).
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
0.24968 0.13685 0.09926 1989Dur/Gui:738

Calculated rotational constants for C4H10O (1-Propanol, 2-methyl-).
Product of moments of inertia moments of inertia
1412540amu3Å6   6.467979964137E-114gm3 cm6
Geometric Data
picture of 1-Propanol, 2-methyl-

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 C4H10O (1-Propanol, 2-methyl-).

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-O 1
C-C 3
C-O 1

Connectivity
Atom 1 Atom 2
C1 C2
C1 C3
C1 C4
C1 H6
C2 O5
C2 H13
C2 H14
C3 H7
C3 H8
C3 H9
C4 H10
C4 H11
C4 H12
O5 H15
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
10.020 0.020 10.470 0.030 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       1.640 NSRDS-NBS10 DT 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 C4H10O (1-Propanol, 2-methyl-).
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 C4H10O (1-Propanol, 2-methyl-).

References
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squib reference DOI
1989Dur/Gui:738 Durig, J.R.; Guigis, G.A.; Little, T.S.; Stiefvater, O.L. "Conformational stability and barriers to internal rotation of 2-methylpropanal by far infrared and microwave spectroscopy." Journal of Chemical Physics. 91, 738-751 (1989) 10.1063/1.457126
NSRDS-NBS10 R. D. Nelson Jr., D. R. Lide, A. A. Maryott "Selected Values of electric dipole moments for molecules in the gas phase" NSRDS-NBS10, 1967 10.6028/NBS.NSRDS.10
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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