Rate coefficients for removal of CN(X2Σ+, ν=2) from selected rotational levels between Ni=0 and 57 in collisions with N2 and C2H2

We report rate coefficients (ktot,i) for the total removal of CN(X2Σ+, ν=2, Ni) radicals from selected levels between Ni = 0 and 57 in collisions with N2 and C2H2. Additionally, state-to-state rate coefficients (ki→f) have been measured for rotational energy transfer in collisions of CN(X2Σ+, ν=2, Ni=0 and 1) with N2 and C2H2. In the case of CN+C2H2, by comparing the values of ktot,i with the sum of the state-to-state rate coefficients (Σfki→f), we infer the rate constants for reaction (kreac,i) of CN(X2Σ+, ν=2, Ni=0 and 1) with C2H2.