where k0(T) ) k0
300(T/300)-n and k∞(T) ) k∞
300(T/300)-m. A fit
of the k(M,T) data (Table 1) to eq 5, including the previous
measurements4 at 295 K, gives k0
300 ) (3.6 ( 0.4) × 10-30 cm6
molecule-2 s-1, k∞
300 ) (4.3 ( 1.2) × 10-11 cm3 molecule-1
s-1, and n ) 6.1 ( 1.0, with m fixed equal to zero