The 2v(1) + 3v(3) band of ozone, which occurs in the 5080 cm(-1) region, has been observed for the first time using a Fourier transform spectrometer, operating at 0.008 cm(-1) resolution and with a large pathlength x pressure product (3616 cm x 42.8 torr). Assignment of rotation-vibration transitions was done for J = 40 and K-a = 14. It was necessary to account for the Coriolis coupling between the levels of the (203) and (132) states to correctly reproduce the energy levels, particularly for states with K-a = 4. In this way, we have obtained a very satisfactory r.m.s. error of 1.8 x 10(-3) cm(-1), close to the experimental accuracy racy. In addition, line intensities of the 2v(1) + 3v(3) band were measured and calculated, and transition moment constants derived. Finally a complete list of line positions and intensities was calculated, leading to a total band intensity of S-V = 0.133 x 10(-21) cm(-1)/mole cm(-2) at 296 K. (C) 1998 Elsevier Science Ltd. All rights reserved.