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Experimental data for C4H5N (Cyclopropanecarbonitrile)

22 02 02 11 45
Other names
Cyanocyclopropane; Cyclopropanecarbonitrile; Cyclopropanecarboxylic acid nitrile; Cyclopropanenitrile; Cyclopropyl cyanide; Cyclopropylnitrile;
INChI INChIKey SMILES IUPAC name
InChI=1S/C4H5N/c5-3-4-1-2-4/h4H,1-2H2 AUQDITHEDVOTCU-UHFFFAOYSA-N N#CC1CC1 Cyclopropanecarbonitrile
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 182.70 0.70 kJ mol-1 webbook
Hfg(0K) enthalpy of formation   0.70 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
1 A' 3120   1988Lit/Zha:479      
2 A' 3052   1988Lit/Zha:479      
3 A' 3044   1988Lit/Zha:479      
4 A' 2264   1988Lit/Zha:479      
5 A' 1468   1988Lit/Zha:479      
6 A' 1344   1988Lit/Zha:479      
7 A' 1195   1988Lit/Zha:479      
8 A' 1125   1988Lit/Zha:479      
9 A' 1049   1988Lit/Zha:479      
10 A' 941   1988Lit/Zha:479      
11 A' 808   1988Lit/Zha:479      
12 A' 736   1988Lit/Zha:479      
13 A' 527   1988Lit/Zha:479      
14 A' 222   1988Lit/Zha:479      
15 A" 3094   1988Lit/Zha:479      
16 A" 3040   1988Lit/Zha:479      
17 A" 1442   1988Lit/Zha:479      
18 A" 1180   1988Lit/Zha:479      
19 A" 1070   1988Lit/Zha:479      
20 A" 1088   1988Lit/Zha:479      
21 A" 880   1988Lit/Zha:479      
22 A" 821   1988Lit/Zha:479      
23 A" 543   1988Lit/Zha:479      
24 A" 222   1988Lit/Zha:479      

vibrational zero-point energy: 17137.5 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for C4H5N (Cyclopropanecarbonitrile).
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 C4H5N (Cyclopropanecarbonitrile).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of Cyclopropanecarbonitrile

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
rCC 1.513   9 10 1976Hellwege(II/7) opp C with extra
rCC 1.472   6 8 1976Hellwege(II/7) towards C#N
rCH 1.107   5 6 1976Hellwege(II/7)
rCN 1.157   7 8 1976Hellwege(II/7)
aHCH 114.6 2 10 3 1976Hellwege(II/7)
aHCC 119.6 5 6 8 1976Hellwege(II/7) from C#N

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for C4H5N (Cyclopropanecarbonitrile).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-C 5
C-C 4
C#N 1

Connectivity
Atom 1 Atom 2
H1 C9
H2 C10
H3 C10
H4 C9
H5 C6
C6 C8
C6 C9
C6 C10
N7 C8
C9 C10
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
10.250       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           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 C4H5N (Cyclopropanecarbonitrile).
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 C4H5N (Cyclopropanecarbonitrile).

References
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squib reference DOI
1976Hellwege(II/7) Hellwege, KH and AM Hellwege (ed.). Landolt-Bornstein: Group II: Atomic and Molecular Physics Volume 7: Structure Data of Free Polyatomic Molecules. Springer-Verlag. Berlin. 1976.  
1988Lit/Zha:479 Little, Zhao, and Durig. Spectra and Structure of Small Ring Compounds LII - Raman and Far-Infrared Spectra of Solid 1,1-Dicyanocyclopropane and Ab Initio Calculations of Cyclopropane, Cyanocyclopropane and 1,1-Dicyanocyclopropane. J. Raman. Spec. Vol. 19. pgs. 479-490. 10.1002/jrs.1250190709
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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