4-Pyridylnicotinamide (4-PNA), also known as N-(pyridin-4-yl)nicotinamide, is a kinked dipodal dipyridine which was originally developed for use in chemotherapy. As in its isomer 3-pyridylnicotinamide, the nitrogen atoms on its pyridine rings can donate their electron lone pairs to metal cations, allowing it to bridge metal centers and act as a bidentate ligand in coordination polymers.
4-Pyridylnicotinamide (4-PNA), also known as N-(pyridin-4-yl)nicotinamide, is a kinked dipodal dipyridine which was originally developed for use in chemotherapy. As in its isomer 3-pyridylnicotinamide, the nitrogen atoms on its pyridine rings can donate their electron lone pairs to metal cations, allowing it to bridge metal centers and act as a bidentate ligand in coordination polymers.
Source: Wikipedia "4-Pyridylnicotinamide" · CC BY-SA 4.0
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