A Volcano-Group-like Halogeno(cyano)cuprate with Efficient Green Luminescence

The first two-dimensional halogeno(cyano)cuprate, [(Me4N)(H3O)][(Cu4Cl4)][Cu(CN)2]2, with an unprecedented volcano-group-like structure possessing peculiar 4-fold Cu4Cl4 crowns has been solvothermally synthesized, which exhibits efficient green luminescence. The emission mechanism was studied in detail to elucidate the relationship of the luminescent properties and crystal structures, which is helpful for the design and synthesis of more efficient luminescent materials.