Doublet separations of forbidden-hyperfine transitions in the EPR of transition-metal complexes

摘要: Abstract The details of a procedure to derive the expressions for doublet separations hyperfine-forbidden transitions: Δ M = ± 1 m 1, or 2 ( , are electronic and nuclear magnetic quantum numbers, respectively) in EPR spectrum, described, taking into account third-order perturbation-energies spin Hamiltonian H β e S T · g B + D A I P − n wherein axes various tensors assumed be non-coincident. These useful estimating quadrupole tensor, -tensor, which cannot otherwise determined, first-order approximation, from positions allowed transitions ΔM Δm 0). specifically applicable Mn 2+ (S 5 are, respectively, spins) have been listed : 3 1; these compared with those published previously. exploited estimate parameters Q ′ ″ X -band observed Cd(CH COO) 3H O.