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Experimental data for H2CCNH (Ethenimine)

22 02 02 11 45
INChI INChIKey SMILES IUPAC name
InChI=1S/C2H3N/c1-2-3/h3H,1H2 ZUKSLMGYYPZZJD-UHFFFAOYSA-N C=C=N
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
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
3 A' 2044   webbook       CCN str
5 A' 1124          
6 A' 1000           NH deform.
7 A' 693           CH2 wag
8 A' 466           CCN bend
10 A" 983           CH2 rock
11 A" 872           torsion
12 A" 409           CCN bend

Calculated vibrational frequencies for H2CCNH (Ethenimine).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
6.71950 0.32233 0.31589 1986Rod/Bro:267

Calculated rotational constants for H2CCNH (Ethenimine).
Product of moments of inertia moments of inertia
7001.966amu3Å6   3.2061805436168E-116gm3 cm6
Geometric Data
picture of Ethenimine

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

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for H2CCNH (Ethenimine).

Bond descriptions


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

Connectivity
Atom 1 Atom 2
C1 C2
C1 H4
C1 H5
C2 N3
N3 H6
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' Cs True 1.371 0.434   1.438 1984Rod/Bro:447 x=c, y=a, z=b 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 H2CCNH (Ethenimine).
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 H2CCNH (Ethenimine).

References
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squib reference DOI
1984Rod/Bro:447 M Rodler, RD Brown, PD Godfrey, LM Tack "Generation, Microwave Spectrum and Dipole Moment of Ketenimine" Chem. Phys. Lett. 110(5) 447-451, 1984 10.1016/0009-2614(84)87068-2
1986Rod/Bro:267 M Rodler, RD Brown, PD Godfrey, B Kleibomer "The Rotation-Inversion Spectrum of Ketenimine, H2C=C=NH" J. Mol. Spect. 118, 267-276 (1986) 10.1016/0022-2852(86)90240-7
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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