Constructing multi-cluster copper(I) halides using conformationally flexible ligands

Three unprecedented multi-cluster copper(I) halides (MCCHs) have been assembled using conformationally flexible ligands. Further explorations demonstrate that the conformational compliance of the ligands may be the key to trap and stabilize the various copper(I)-halide clusters in one system, which opens a new way for the construction of multi-Cu(I)-cluster complexes. Moreover, the MCCHs show distinctive temperature-dependent photoluminescence.