The v6Â =Â 1 and v6Â =Â 2 vibrational states of DCF3

In the course of analyzing simultaneously the overtone 2ν6∓2 band together with the 2ν6±2-ν6±1 and ν6 bands, the original assignment of the fundamental ν6 band [Bürger et al., J. Mol. Spectrosc. 182 (1997) 34-49] was found to be incompatible with the present one. Assignments of the (k + 1, l6 = +1)/(k − 1,l6 = −1) levels had to be interchanged, which changed the value of Cζ6 = −0.14198768(26) cm−1 and the sign of the combination of constants C − B − Cζ in the v6 = 1 level to a negative value.