The spectrum and lifetime of laser-induced emission from NFCl radicals isolated in low-temperature argon matrices are reported. The spectrum is compared to emission observed following the photolysis of gas phase NFCl2, and the tentative assignment of the gas phase emission to NFCl is confirmed. The lifetime of the NFCl emission in the matrix is 610 +/- 40 ns. The difference in lifetimes observed in the gas phase emission and the matrix emission is discussed in terms of a mechanism involving the ability of different vibrational modes of predissociated electronic states to couple in the low-temperature matrix environment. Gaussian 92 calculations of the ground state vibrational frequencies are presented, and there is good agreement between these values and the experimental values. The N-Cl bond energy for ground state NFCl is computed from a G-1 calculation of the Delta H-form of NFCl.