Synthesis, crystal structure, and luminescent property of a discrete Zn3L3 metallomacrocycle constructed from 5-hydroxyisophthalic acid

Abstract

An interesting discrete metallomacrocycle (MMC), [Zn₃(L)₃(H₂O)₆] · H₂O (I), has been prepared by means of self-assembly of Zn(II) salt, 5-hydroxyisophthalic acid (H₂L) as organic linker and 5,5’-(pyridine-2,6-diyl)diisophthalic acid (H₄L’) as structure-directing agentunder hydrothermal condition. In complex I, the planar trinuclearmetal-organic macrocycles are arranged into 2D sheet layers connected by strong hydrogen bonded between OH groups of the ligands. Then they stack into 3D supramolecular architecture in–ABAB–array way to give a small 1D open channel along the c axis (CIF file CCDC no. 1053024). Additionally, thermal stability and luminescence properties of I were also investigated.