5-pyridin-2-yl-[1,2,4]triazolo[4,3-a]pyridine

6-pyridin-2-yl-1H-pyridin-2-one

1-Methyl-2,2'-bipyridin-6(1H)-one

iron,2-pyridin-2-ylpyridine

6,6′′-二溴-2,2′:6′,2′′-三联吡啶