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Experimental data for C5H9N (Propanenitrile, 2,2-dimethyl-)

22 02 02 11 45
Other names
2,2-Dimethylpropanenitrile; 2,2-Dimethylpropionitrile; 2-Cyano-2-methylpropane; Pivalonitrile; Propanenitrile, 2,2-dimethyl-; tert-Butylcyanide; tert-Butylnitrile; Trimethylacetonitrile;
INChI INChIKey SMILES IUPAC name
InChI=1S/C5H9N/c1-5(2,3)4-6/h1-3H3 JAMNHZBIQDNHMM-UHFFFAOYSA-N CC(C)(C)C#N Pivalonitrile
State Conformation
1A1 C3V
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 -3.31   kJ mol-1 webbook
Hfg(0K) enthalpy of formation     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  
Heat Capacity (298.15K) heat capacity 124.22   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 (Propanenitrile, 2,2-dimethyl-).
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
  0.09173 0.09173 1962Nug/Man:965-971

Calculated rotational constants for C5H9N (Propanenitrile, 2,2-dimethyl-).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of Propanenitrile, 2,2-dimethyl-

Point Group C3v


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
rCN 1.159 0.001 2 6 1962Nug/Man:965-971

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for C5H9N (Propanenitrile, 2,2-dimethyl-).

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 C2
C1 C3
C1 C4
C1 C5
C2 N6
C3 H7
C3 H10
C3 H11
C4 H8
C4 H12
C4 H13
C5 H9
C5 H14
C5 H15
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A1
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 1A1 C3v True       3.950 NSRDS-NBS10 MW C3v 1 1
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 (Propanenitrile, 2,2-dimethyl-).
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 1A1 C3v True       C3v 1 1

Calculated electric quadrupole moments for C5H9N (Propanenitrile, 2,2-dimethyl-).
Electric dipole polarizability (Å3) polarizability
alpha unc. Reference
9.591   1998Gus/Rui:163

Calculated electric dipole polarizability for C5H9N (Propanenitrile, 2,2-dimethyl-).

References
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squib reference DOI
1962Nug/Man:965-971 LJ Nugent, DE Mann, DR Lide "Microwave Structure Determinations on Tertiary Butyl Acetylene and Tertiary Butyl Cyanide" J. Chem. Phys. 36, 965 (1962) 10.1063/1.1732697
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
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
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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