return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Experimental > One molecule all properties

Experimental data for CH3CHOHCH3 (Isopropyl alcohol)

22 02 02 11 45
Other names
1-Methylethyl Alcohol; 2-Hydroxypropane; 2-Propanol; 2-Propyl alcohol; Alcohol, rubbing; Dimethylcarbinol; IPA; i-Propanol; i-Propylalkohol; iso-C3H7OH; Isopropanol; Isopropenol; Isopropyl Alcohol; Isopropyl alcohol, rubbing; Propan-2-ol; Propane, 2-hydroxy-; sec-Propanol; sec-Propyl Alcohol;
INChI INChIKey SMILES IUPAC name
InChI=1S/C3H8O/c1-3(2)4/h3-4H,1-2H3 KFZMGEQAYNKOFK-UHFFFAOYSA-N CC(C)O Propan-2-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 -272.70   kJ mol-1 TRC
Hfg(0K) enthalpy of formation -248.60   kJ mol-1 TRC
Entropy (298.15K) entropy 309.20   J K-1 mol-1 TRC
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 17.27   kJ mol-1 TRC
Heat Capacity (298.15K) heat capacity 89.32   J K-1 mol-1 webbook
Barrier to Internal Rotation 7.0   kJ mol-1 1970Kon/Hir:97 V3=1.68 kcal/mol
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 CH3CHOHCH3 (Isopropyl alcohol).
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
0.28316 0.26824 0.15895 1970Kon/Hir:97 trans form

Calculated rotational constants for CH3CHOHCH3 (Isopropyl alcohol).
Product of moments of inertia moments of inertia
396801.5amu3Å6   1.81694281496512E-114gm3 cm6
Geometric Data
picture of Isopropyl alcohol

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 CH3CHOHCH3 (Isopropyl alcohol).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-C 7
H-O 1
C-C 2
C-O 1

Connectivity
Atom 1 Atom 2
C1 C2
C1 C3
C1 O4
C1 H5
C2 H6
C2 H7
C2 H8
C3 H9
C3 H10
C3 H11
O4 H12
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
10.170 0.020 10.440   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   1.400 0.730 1.580 1970Kon/Hir:97 MW +-0.03 μ0 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 CH3CHOHCH3 (Isopropyl alcohol).
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 CH3CHOHCH3 (Isopropyl alcohol).
Electric dipole polarizability (Å3) polarizability
alpha unc. Reference
6.670   1998Gus/Rui:163

Calculated electric dipole polarizability for CH3CHOHCH3 (Isopropyl alcohol).

References
By selecting the following links, you may be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].
squib reference DOI
1970Kon/Hir:97 S Kondo, E Hirota "Microwave spectrum and Internal Rotation of Isopropyl Alcohol" J. Mol. Spec. 34, 97-107 (1970) 10.1016/0022-2852(70)90077-9
1998Gus/Rui:163 M Gussoni, R Rui, G Zerbi "Electronic and relaxation contribution to linear molecular polarizability. An analysis of the experimental values" J. Mol. Struct. 447 (1998) 163-215 10.1016/S0022-2860(97)00292-5
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

Got a better number? Please email us at [email protected]


Browse
PreviousNext