A theory is presented for the fine and hyperfine interactions in the (2)Pi state open shell complexes like NO-HF containing remote magnetic nuclei. The nitrogen hyperfine Hamiltonian is based on the conventional Frosch and Foley treatment for diatomic radicals. An alternative treatment has been developed for the intermolecular hydrogen and fluorine magnetic hyperfine interactions based on a dipolar model for both electron spin and orbital magnetic moments.