The importance of ^98/100Mo in producing ^99mTc, a radio tracer that is in ever increasing demand, is very wellknown. We present here our results of experiments carried out to enrich ^98/100Mo by the process of multiphoton dissociation of MoF₆ under cooled conditions (58 °C). Selective excitation of the combination mode (v₃ + v₅) lying in the 1050 cm^–1 region was possible by the 9 μm band emission lines of a CO₂ laser. A maximum enrichment factor of ~1.12 for the case of 100Mo was achieved upon irradiation with the 9P(10) line that is nearresonant to ⁹²MoF₆.