The structure and property of two different metal-organic frameworks based on N/O-donor mixed ligands

Abstract

Two different metal-organic frameworks (MOFs) [Cd2(AZN)(HAZN)(btc)(Hbtc)·4H2O]·2H2O (1), and [Zn3 (AZN)2 (btc)2·4H2O] (2) were synthesized by the reactions of different metal salts with mixed ligands of 1-(4-(1H-imidazol-5-yl)phenyl)-1H-1,2,4-triazole (AZN) and trimesic acid (H3btc). The different metal centers in the reaction condition have important impact on the resulting structures of MOFs 1 and 2. Compound 1 is a one-dimensional (1D) chain structure, while 2 features a threedimensional (3D) framework with 3-fold interpenetration topology of Point (Schläfli) symbol of (6·82)4 (62·82·102). Furthermore, the luminescent properties have been studied for MOFs 1 and 2.