CIDNP in the radiolysis of aqueous methanol indication of methoxy radical involvement

The unusual high-field polarization in ethylene glycol observed in the NMR spectra of irradiated aqueous methanol implies that an encounter of a hydroxymethyl radical with a radical having a higher g-factor precedes dimerization. Arguments are presented supporting identification of CH₃O· as the glycol polarizing species. Participation of e^?_aq in the formation of CH₃O· in a spur process is considered.