The unique characters of s-tetrazines, the nitrogen-rich six-membered aromatic heterocycles originate in their extreme electron deficiency. The electron deficiency of the π-system enable to sustain efficient attraction for polarized atoms or anions. Another important property of tetrazines is that since it has the multiple metal binding sites, it makes transition metal complexes easily with multinuclear coordination complexes.
Coordination polymers and metallamacrocycles containing s-tetrazine derivatives and hexafluorophosphate with novel topology are synthesized and their X-ray crystal structural features will be presented. Especially taking into account the influence of anion-π interaction with various of 3,6-disubstituted derivatives to generate new supramolecular architectures.