Magnetic field effects in reactions of CH3* and Br-2(-) radicals with Ni(Me(2)pyo[14]trieneN(4))(2+) were investigated under magnetic inductions, B, between 0 and 7 T by flash photolysis. The dependences of the normalized rate constants, k(B)/k(0), on B do not conform to the model where the spin motion, Zeeman, and hyperfine and spin-orbit interactions are combined with free reencounters of radical-ion pairs. The experimental observations were better described when the dynamic-probability function was an exponential. The reasons for the observed magnetokinetic behavior in reactions of Ni(Me(2)pyo[14]trieneN(4))(2+), i.e., restrictions imposed by the dynamics of Ligand interchange, are discussed.