and as k5.11-5.20 (298 K)= 1.5 10-10 cm3 molecule-1 s-1 with no temperature dependence for 200−350 K by the IUPAC subcommittee report Vol. II(Atkinson et al., 2006) based on experiments by Davidson et al. (1977), Blitz et al. (2004), Dillon et al. (2007), Vranckx et al. (2008b) et al.