Crystal structures and photoluminescence of the Zn(II) and Cd(II) complexes of N-methylpyrazinium obtained by a less hazardous approach

A less hazardous approach has been used to synthesize N-methylpyrazinium cation ligand (mpz+). Three novel mpz+-containing complexes with interesting structural modes have been successfully obtained. Photoluminescent analyses reveal that three complexes exhibit strong blue emissions originating from intra-ligand π-π∗ transition of the ligand.