A number of N-substituted azacalix[4]pyrimidines were synthesized by two methods. While straightforward condensation reaction between 4,6-dichloropyrimidine and 4,6-bis(alkylamino)pyrimidines gave ...

The hexaazaphenalenyl anion (HAP, 3-), a highly symmetric heterocyclic π system, has been synthesized and characterized. The crystal structures of its potassium salt K+·3- and copper complex Cu2+·(NH3 ...