The reaction of F atoms with methane in an argon matrix

A microwave discharge through an Ar:CF 4 or Ar:NF 3 sample flowing through an Al 2 O 3 tube provides a suitable source of F atoms for studies of the infrared spectra of the products of their reaction with CH 4 trapped in an argon matrix at 14 K. Prominent infrared absorptions of isolated CH 3 and HF appeared in these experiments. The further reaction of F atoms in the solid deposit leads to the stabilization of the H 3 C|HF complex, for which two infrared absorption have been identified. Detailed isotopic studies of this complex are presented. Secondary reaction of F atoms with CH 3 isolated in solid argon leads to the stabilization of CH 3 F, while the corresponding reaction with H 3 C|HF leads to the appearance of the H 3 CF|HF complex, for which isotopic data are also presented.