Science Advances

Supplementary Materials

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  • Supplementary Text
  • Table S1. Infrared absorption peaks before and after irradiation for PH3 + H2O/H218O + CH4/13CH4.
  • Table S2. PI-ReTOF-MS ion counts detected from irradiation of the PH3 + H2O + CH4 ice mixture and confirmed using H218O and 13CH4.
  • Table S3. Identified alkylphosphonic acids and phosphorus oxoacids as trimethylsilyl derivatives by GC×GC-TOF-MS.
  • Table S4. Quantities of identified alkylphosphonic acids and phosphorus oxoacids in the PH3/H2O/13CH4 ice mixture and the irradiation yield (molecules eV−1).
  • Fig. S1. Temperature programmed desorption profiles associated with mass-to-charge ratios (m/z) of H5CPO, H5CPO2, H5CPO3, and H5CPO4.
  • Fig. S2. Calculated ionization energies (IE) and relative isomeric energies (ΔE) for the isomers of H5CPO, H5CPO2, H5CPO3, and H5CPO4.
  • Fig. S3. Organophosphorus compounds detected in the room temperature residues irradiated ices composed of PH3/H218O/CH4 by multidimensional gas chromatography.
  • Fig. S4. Organophosphorus compounds detected in the room temperature residues irradiated ices composed of PH3/H2O/13CH4 by multidimensional gas chromatography.
  • Fig. S5. Time-of-flight mass spectra of silylated phosphorus compounds identified in the residue from irradiated ices of PH3/H2O/13CH4.
  • Fig. S6. Time-of-flight mass spectra of silylated phosphorus compounds in the residue from irradiated ices of PH3/H218O/CH4.
  • Fig. S7. Time-of-flight mass spectra of silylated methylphosphonic acid identified in residues of ices PH3/H218O/CH4 and PH3/H2O/13CH4.
  • References (3743)

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