Jk. Judice et al., A STRONGLY BINDING, HELICALLY CHIRAL LIGAND SYSTEM, Journal of the Chemical Society, Chemical Communications, (17), 1993, pp. 1323-1325
The syntheses, characterization and binding properties are described f
or two helically chiral ligand systems containing two phenanthroline u
nits whose nitrogens are roughly tetrahedrally arranged in one system
and potentially arrangeable that way in a second.