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Species data
Name 1,2-propadiene
Common Formula CH2CCH2
Mass 40.03130 a.m.u
Charge 0
CAS 463-49-0
Inchi InChI=1S/C3H4/c1-3-2/h1-2H2
Electronic State
Excitation Ground State

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ISM Abundance
log10 Abundance Reference Source Name Source Type Link
No data
Dipole moment
No data
Enthalpy of formation
No data
Desorption energy
Emean (K): 3000 ±900
E min (K): 0
E max (K): 0
Pre-exponential factor (s-1): 0.00E+0
Method: Calculations
Origin: Bibliography
Reference: Wakelam, V. et al. ;2017;ArXiv e-prints;,
Type of surface: H2O
Description: To estimate the unknown binding energies (for most of the radicals for example), we have developed a model founded on the stabilization energy of the complex between the various species and one water molecule. Then, we assume that the binding energy of the species with ASW is proportional to the energy of interaction between this species and one water molecule. To determine the proportionality coefficients, we fit the dependency of the experimental binding energies versus the calculated energies of the complexes for 16 stable molecules. Uncertainties in ED is estimated to be 30%. The preexponential factor is to be computed using the Hasegawa et al. (1992) approximation.
Diffusion energy
No data