Rovibrational spectra of DCF3 in the 1000 cm−1 region: The ν5 = 1 and ν6 = 2 levels revisited

► Several high-resolution infrared spectra of DCF3 in the 500 and 1000 cm−1 regions have been used in this work. ► Fourier-transform IR, rotational and laser-sideband rovibrational data were combined in a simultaneous fit. ► Anharmonic, second-order Coriolis, and α-resonance interactions were taken into account in the theoretical model. ► A fully quantitative reproduction of the experimental data has been achieved.