| abstract |
A compound of formula I or a salt thereof (I) where M is selected from the group consisting of platinum (II), palladium (II), and copper(II); L 1 is an intercalator moiety; and L 2 is a bidentate ligand provided that when L 2 is other than a bidentate ligand containing an aryl or phenyl group, L 2 is a chiral bidentate ligand. |