1 DPT 4,7-dimethyl-[1,10]phenanthroline 1.000 2 A1D9G 4-methyl-2-(4-methylpyridin-2-yl)pyridine 0.875 3 PHN 1,10-phenanthroline 0.875 4 0BP 2,2'-bipyridine 0.750 5 PXX N-1,10-phenanthrolin-5-ylacetamide 0.700