Abstract The preparation of a macrocyclic diphosphine ligand 5 incorporating a binaphthyl unit and its Ni II and Pd II complexes, 6 and 7, is described. A complete assignment of 1 H,- 13 C-, and 31 P-NMR data on the basis of 2D NMR spectroscopy (1 H, 1 H-, 13 C, 1 H-, 31