A pcu-type metal–organic framework with spindle [Zn7(OH)8]6+ cluster as secondary building units.

The in situ solvothermal reaction of 9,10-dicyanoanthracene and ZnCl2/NaN3 gave the complex, {[Zn7(OH)8(DTA)3]·H2O}n (1) (DTA2− = 9,10-ditetrazolateanthracene), which presents a pcu-type topological framework formed by DTA2− bridging unprecedented heptanuclear spindle [Zn7(OH)8]6+ clusters as SBUs, and exhibits strong luminescent emission with long lifetime. [ABSTRACT FROM AUTHOR]