A pyridine derivative (3) and TsOH form a 2 + 2 salt with six hydrogen bonds in the solid state, although there are equilibria between some aggregation states induced by hydrogen bonding in solution.
A pyridine derivative (3) and TsOH form a 2 + 2 salt with six hydrogen bonds in the solid state, although there are equilibria between some aggregation states induced by hydrogen bonding in solution.