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Table 1

Relative energies (eV) of different forms of CH2CN (neutral, cationic, and anionic) in the gas phase and the ice phase along with their dipole moments.

Species Spin state Relative energy in gas phase Dipole moments in gas phase Relative energy in ice phase Dipole moments in ice phase
(in eV) (in Debye) (in eV) (in Debye)

doublet 0 3.5974 0 4.6355
CH2CN quartet 4.08 2.4705 4.15 3.3207
sextet 8.16 1.5430 8.28 1.8471

singlet 0 5.305 0 6.606
CH2CN+ triplet 1.94 3.802 2.08 4.474
quintet 5.47 3.653 5.63 4.213

singlet 0 1.212 0 2.469
CH2CN triplet 2.06 6.712 3.17 3.183
quintet 6.35 6.5460 6.52 2.8671

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