6-氰基-2,2'-联吡啶

N-氧代-4-硝基-2，2’联吡啶

4-bromo-1-oxido-2-pyridin-2-ylpyridin-1-ium

2-pyridin-2-ylpyridin-4-amine

6-碘-4-甲氧基-2,2'-联吡啶