Unprecedented cationic copper(I)-iodide aggregates trapped in click formation of anionic-tetrazolate-based coordination polymers

A series of unprecedented cationic copper(I)-iodide aggregates, (Cu4I2)(2+), (Cu6I2)(4+) and (Cu10I4)(6+), are trapped in the in situ formation of anionic-tetrazolate-based coordination polymers, namely [Cu-2(mu(3)-I)(mu(5)-Cpta)](n) (1), [Cu-5(mu(4)-I)(mu(4)-Mtta)(3)(CN)](n) (2) and [Cu-5(mu(6)-I)(mu(2)-I)(mu(4)-Mtta)(3)](n) (3) [Cpta = 5-(3-cyanophenyl)tetrazolate, Mtta = 5-methyltetrazolate], which exhibit structure-related green, cyan and blue luminescence, respectively.