Isonicotinamide-formamide (1/1)

The 1:1 co-crystal of isonicotinamide and formamide, C₆H₆N₂O·CH₃NO, consists of hydrogen-bonded dimers, each comprising two isonicotinamide or two formamide mol­ecules. These dimers are connected further by hydrogen bonds into sheets, which are parallel to the (11) plane.