Dunham energy parameters of isotopic carbon monoxide,hydrogen halide,and hydroxyl radical molecules

Dunham potential energy coefficients a₁-a₆ for ¹²C¹⁶O, ¹³C¹⁶O, ¹²C¹⁸O, H⁸¹Br, HI, and OH have been calculated, including error limits, from published experimental spectroscopic data. There is no indication of deviation from Born-Oppenheimer behavior for a₁-a₆ of the carbon monoxide molecules, and the mass-independent internuclear separation R_e and force constants k_e and a₀ have also been calculated.