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Experimental data for C5H9N (Butanenitrile, 2-methyl-)

22 02 02 11 45
Other names
2-Methylbutanenitrile; 2-Methylbutyronitrile; 2-Cyanobutane; Butanenitrile, 2-methyl-; Butyronitrile, 2-methyl-;
INChI INChIKey SMILES IUPAC name
InChI=1S/C5H9N/c1-3-5(2)4-6/h5H,3H2,1-2H3 RCEJCSULJQNRQQ-UHFFFAOYSA-N CC[C@@H](C)C#N 2-Methylbutanenitrile
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 2.44 1.44 kJ mol-1 webbook 0k from TRC
Hfg(0K) enthalpy of formation 28.80 1.44 kJ mol-1 webbook 0k from TRC
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 121.80   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 C5H9N (Butanenitrile, 2-methyl-).
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 C5H9N (Butanenitrile, 2-methyl-).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of Butanenitrile, 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 C5H9N (Butanenitrile, 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
C-C 4
C#N 1

Connectivity
Atom 1 Atom 2
C1 N2
C1 C14
C3 H4
C3 H5
C3 H6
C3 C14
C7 H8
C7 H9
C7 H10
C7 C11
C11 H12
C11 H13
C11 C14
C14 H15
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A
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 C5H9N (Butanenitrile, 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 C5H9N (Butanenitrile, 2-methyl-).

References
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squib reference DOI
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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