The absorption spectrum of the weakly bound complex CO2-Br-2 has been observed by probing the asymmetric stretch of the CO2 moiety near 2349 cm(-1). The complex was formed by the supersonic expansion of a mixture of CO2 and bromine vapor with He as a carrier gas. CO2-Br-2 was found to have a linear structure with one Br atom close to the center of mass of the system. The isotopic mixture of the second Br provided the splitting of the observed peaks into two. The measured rotational and distortion constants for Br-79 and Br-81 are B＇ = 0.0148034(26), D＇ = 6.43(17) x 10(-8), B " = 0.0146591(26), D " = 6.01(16) x 10(-8) and B＇ = 0.0146763(27), D＇ = 6.42(18) x 10(-8), B " = 0.0145321(28), D " = 6.04(19) x 10(-8), respectively (in cm(-1)). The distances from the Br-2 bond center to the C atom are 5.116 and 5.083 Angstrom for the ground and excited states, respectively, and the force constant of the van der Waals stretching mode is estimated to be 0.004 mdyn/Angstrom in both states. The experimental values are compared with the results of ab initio calculations performed at the Hartree-Fock and MP2 levels. The origin of van der Waals binding between CO2 and Br-2 and the floppiness of the complex are discussed.