A zinc coordination compound showing green photoluminescence

A novel three-dimensional coordination compound has been solvothermally synthesized based on a tetracarboxylate ligand H4L (H4L = 1,3,6,8-tetrakis(4-carboxylphenyl)pyrene), Zn2L(H2O)(2).2DEF (1) (DEF = N,N'-diethylformamide). Each Zn ion is coordinated by four carboxylate oxygen atoms from four L4- ligands and one oxygen atom from a water molecule to provide a distorted square-pyramidal geometry. Pairs of adjacent Zn cations are bridged by four carboxylate groups of four different L4- ligands to generate a paddle-wheel [Zn-2(COO)(4)(H2O)(2)] secondary building unit (SBU). Each SUB is further linked to four L4- ligands to give a three-dimensional framework with cds-type (CdSO4-type) topology. The crystal structure has been determined via single-crystal X-ray diffraction, and the compound was characterized by elemental and thermal analysis, infrared spectroscopy, powder X-ray diffraction, and solid-state photoluminescence measurements.

Automated summary

A novel three-dimensional coordination compound has been synthesized through solvothermal method, featuring a paddle-wheel secondary building unit and a three-dimensional framework with CdSO4-type topology.