High resolution synchrotron far-infrared study of CH2D79Br: The v6 fundamental and 2v6 − v6, v5 + v6 − v6 and v6 + v9 − v6 hot bands

► High resolution synchrotron far-infrared study of CH2D79Br. ► Rovibrational analysis of the ν6 fundamental band. ► Upper-state parameters obtained up to sextic order centrifugal distortion terms. ► Analysis of the hot bands originating from v6. ► Effective upper-state constants determined using v6 = 1 as lower-state.