Pulsed Nd:YAG laser ablated uranium atoms were codeposited with F-2 and excess Ar onto a CsI window at 12 K. Infrared spectra revealed the presence of several uranium fluorides including the previously characterized UF4, UF5, and UF6. Lower laser energy favored new:absorptions at 400, 446, 496, and 561 cm(-1). These product absorptions increased stepwise during annealings which permitted diffusion and reaction of the fluorine. Similar studies with ClF produced the above absorptions plus a new band at 554 cm(-1) which is tentatively assigned to ClF2-. The first bands appearing at 400 and 446 cm(-1) are assigned to UF and UF2, respectively. The 496- and 561-cm(-1) bands are tentatively assigned to UF3 and F-3(-) respectively. Finally, uranium atoms were reacted with Cl-2. In addition to several absorptions due to UCl4, a new doublet at 312 and 308 cm(-1) is assigned to UCl2.